0001084991-26-000015 | 10-K | XBRL Viewer | Natural GAS Services Group INC

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Stock-Based and Other Long-Term Incentive Compensation - Schedule of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 2,566	$ 2,069	$ 2,054
Equity-classified
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	2,126	1,821	2,054
Liability-classified
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 440	$ 248	$ 0

Trade Accounts Receivable - Narrative (Details) - Oxy - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Sales and Rental Income
Concentration Risk [Line Items]
Concentration risk, percentage	59.00%	59.00%	52.00%
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	62.00%	60.00%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References + Details

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Principles of Consolidation and Basis of Presentation

The accompanying Consolidated Financial Statements were prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) and the rules and regulations of the Securities and Exchange Commission (the “SEC”) and include the accounts of the Company, its subsidiary, NGSG Properties, LLC and the rabbi trust associated with our deferred compensation plan (see Note 12). All significant intercompany accounts and transactions for the periods presented have been eliminated in consolidation.

Use of Estimates

The preparation of our Consolidated Financial Statements in conformity with GAAP requires our management to make estimates and assumptions that affect the amounts reported in these Consolidated Financial Statements and accompanying notes. Actual results could differ from those estimates. Significant estimates include fixed asset lives, provision for credit losses, the allowance for inventory obsolescence and the determination of carrying values in excess of fair values, when applicable, in connection with our annual review of our long-lived assets for impairment.

Cash and Cash Equivalents

For purposes of reporting cash and cash equivalents and cash flows, we consider all short-term investments with an original maturity of three months or less to be cash equivalents. At times, cash balances at banks and financial institutions may exceed federally insured amounts.

Accounts Receivable and Credit Losses

Our trade accounts receivable are generally for 30 days in accordance with the payment terms specified in our master rental service and similar agreements. Our trade accounts receivable are substantially concentrated with customers in the exploration and production industry and range from large, multinational majors to regional firms of various sizes. We perform ongoing credit evaluations of our customers and adjust credit limits based on management’s assessment of the customer’s financial condition and payment history, as well as industry and general economic conditions. We continuously monitor collections and payments from our customers, and maintain an allowance for estimated credit losses based upon our historical experience and any specific customer collection issues that we have identified as well as forecasts of future economic conditions. While such credit losses have historically been within our expectations and the allowance established, we cannot guarantee that we will continue to experience the same credit loss rates that we have in the past.

Revenue Recognition

The following is a description of principal activities from which we generate our revenue and the accounting policies that we apply for the recognition thereof:

Rental Revenue. We generate revenue from renting compressor equipment to our customers for the right to control the use of the equipment ratably over the term of the underlying master rental service and similar agreements. Our agreements for rental equipment qualify as operating leases under the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 842, Leases, as amended (“ASC 842”), as we retain the primary exposure to changes in the underlying equipment’s value as the lessor unlike a sale or secured lending arrangement. Our agreements may also include a fee for servicing the equipment and surcharges for fluids, including oil, during the term of the underlying rental agreement. We have applied the practical expedient provided in ASC 842, which allows us to combine lease and non-lease components. Our rental agreements typically range from 12 to 60 months.

As a lessor, we recognize operating lease revenue on a straight-line basis with equal monthly payments over the term of the underlying agreements. After the terms of the agreement have expired, a customer may renew their contract or continue renting on a monthly basis thereafter. The leased equipment is generally skid-mounted and can be moved to different locations at the direction of our customers. The leased equipment assets remain on our Consolidated Balance Sheets consistent with other property and equipment. Cash receipts associated with our lease agreements are classified within cash flows from operating activities in our Consolidated Statements of Cash Flows.

Sales and Aftermarket Services Revenue. We generate revenue from the sale of component parts as well as exchange/rebuilding customer owned compressors and sale of used rental equipment. We also provide routine aftermarket or call-out services on customer owned equipment.

Consistent with ASC Topic 606, Revenues from Contracts with Customers, as amended (“ASC 606”), revenue is measured and recognized based on a consideration specified in a customer’s contract, excluding any sale incentives and taxes collected on behalf of third parties (i.e. sales and property taxes). Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration that we expect to receive for those goods or services. To recognize revenue, we (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, we satisfy the performance obligation(s). Transaction prices are not subject to variable consideration constraints. Shipping and handling costs incurred are accounted for as fulfillment costs and are included in cost of revenues in our Consolidated Statements of Operations.

For sales, revenue is recognized when control has passed to the customer generally when the equipment is completed and shipped. These contracts also may include an assurance warranty clause to guarantee the product is free from defects in material and workmanship for a set duration of time; this is a standard industry practice and is not considered a performance obligation. The amount of revenue recognized is not adjusted for expected returns, as our historical returns have been de minimis. Revenue for aftermarket and other services is recognized after the services in the contract are rendered.

Inventory Valuation

Inventory (current and long-term) is valued at the lower of cost or net realizable value. The cost of inventories is determined by the weighted average method. We regularly review inventory quantities on hand and record a provision for excess and obsolete inventory based primarily on current and anticipated customer demand and assembly requirements. We routinely review our inventory allowance to account for slow moving or obsolete inventory costs that may not be recoverable in the future. We assess anticipated customer demand based on current and upcoming activities and budgets of our major customers as well as other significant companies in the industry, along with oil and gas price forecasts and other factors affecting the industry. Our long-term inventory, which is fully reserved, consisted of raw materials and replacement parts that remain viable but with limited marketing opportunities.

Long-Lived Assets

Rental equipment and property and equipment are recorded at cost less accumulated depreciation, except for work-in-progress on new rental equipment which is recorded at cost until completion and addition to our fleet. Depreciation is computed using the straight-line method over the estimated useful lives of the major asset categories as follows:

Rental equipment

years

Buildings and leasehold improvements

years

Machinery, equipment and furniture

years

Computer hardware and software

years

Vehicles

years

We assess our rental equipment and property and equipment for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. The following factors could trigger an impairment review: significant underperformance relative to historical or projected future cash flows; significant adverse changes in the extent or manner in which the asset (or asset group) is being used or its condition, including a meaningful drop in fleet utilization over the prior four quarters; significant negative industry or company-specific trends or actions, including meaningful activity and budget reductions by our major customers or other sizable exploration and production or midstream companies, as well as significant declines in oil and gas prices; legislative changes prohibiting us from leasing our compressor units; or poor general economic conditions. An impairment loss is recognized if the future undiscounted cash flows associated with the asset (or asset group) and the estimated fair value of the asset are less than the asset’s carrying value.

Sales of equipment out of the rental fleet are included with sales revenue and cost of sales, while retirements of units are presented as a separate operating expense. Maintenance and repairs are charged to cost of rentals as incurred.

Intangible Assets

We amortize intangible assets with definite lives over their useful lives and review for impairment when indicators of impairment are present. We review indefinite-lived intangible assets for impairment annually or when indicators of impairment are present. We review intangibles through an assessment of the estimated future cash flows related to such assets. In the event that assets are found to be carried at amounts in excess of estimated undiscounted future cash flows, then the assets will be adjusted for impairment to a level commensurate with a discounted cash flow analysis of the underlying assets. As of December 31, 2024, we no longer have any intangible assets. Amortization expense attributable to our former intangible assets was $0.1 million for each of the years ending December 31, 2024 and 2023. We also incurred an impairment charge of $0.7 million for an intangible asset attributable to a trade name during the year ended December 31, 2024.

Leases

We determine if an arrangement is a lease at inception by assessing whether it conveys the right to control the use of an identified asset for a period of time in exchange for consideration. We determine lease classification and recognize right-of-use (“ROU”) assets and liabilities on the lease commencement date based on the present value of lease payments over the lease term. For each lease that (i) contains the same timing and pattern of transfer for lease and non-lease components and (ii) if the lease component, if accounted for separately, would be classified as an operating lease, we have elected the practical expedient to not separate non-lease components from lease components. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As substantially all of our leases do not provide an implicit rate, we use our incremental borrowing rate, which is based on a fully collateralized loan over the lease term, to determine the present value of lease payments. Our ROU assets are included in Other assets and the related current and long-term lease obligations are included in Accrued liabilities and Other long-term liabilities, respectively, on our Consolidated Balance Sheets.

Internal-Use Software

We maintain and utilize certain computer software applications that we own to support our business information needs. Such software is capitalized on our Consolidated Balance Sheets within Property and equipment (see N ote 7) that is amortized over its useful life and recognized as a component of Depreciation and amortization in our Consolidated Statements of Operations. In addition, certain of our information technology service contracts are considered hosting arrangements. Accordingly, certain qualifying costs associated with the implementation of a hosting arrangement are capitalized on our Consolidated Balance Sheets within Other assets and amortized over the term of the respective contract beginning on the date for each component of the hosting arrangement when the component is ready for its intended use. Amortization of capitalized implementation costs of our hosting arrangements are recognized in our Consolidated Statements of Operations within Selling, general and administrative expenses consistent with the fees for the associated hosting arrangement services.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, and net operating losses and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the period that includes the statutory enactment date. Valuation allowances are established to reduce deferred tax assets when it is more likely than not that some portion or all of the deferred tax assets will not be realized.

With respect to uncertain tax positions, GAAP prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. In order to record any financial statement benefit, we are required to determine, based on technical merits of the position, whether it is more likely than not (a likelihood of more than 50 percent) that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes. If that step is satisfied, then we must measure the tax position to determine the amount of benefit to recognize in the financial statements. The tax position is measured at the largest amount of the benefit that is greater than 50 percent likely of being realized upon ultimate settlement. We had no liabilities for uncertain tax positions as of December 31, 2025 and 2024.

Our policy regarding income tax interest and penalties is to charge those items as components of interest expense and other income (expense), respectively.

Capitalized Interest

We capitalize interest from external borrowings on significant expenditures for the assembly of our natural gas compressor equipment until such projects are ready for their intended use. Capitalized interest is added to the cost of the underlying asset and is amortized over the useful lives of the assets in the same manner as the underlying assets.

Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date under current market conditions. GAAP provides for a fair value hierarchy, which requires an entity to maximize the use of observable inputs when measuring fair value. These inputs are categorized as follows:

Level 1 - quoted prices in an active market for identical assets or liabilities;

Level 2 - quoted prices in an active market for similar assets or liabilities, inputs other than quoted prices that are observable for similar assets or liabilities, inputs derived principally from or corroborated by observable market data by correlation or other means; and

Level 3 - valuation methodology with unobservable inputs that are significant to the fair value measurement.

We believe that the fair value of our cash and cash equivalents, trade accounts receivables, and accounts payable as of December 31, 2025 and 2024 approximate their carrying values due to the short-term nature of the instruments or the use of prevailing market interest rates. We considered the borrowings under our credit facility to approximate fair value based upon variable interest rates currently available to us for loans with similar terms (level 2).

Segments and Related Information

GAAP defines the characteristics of an operating segment as (i) being engaged in business activity from which it may earn revenue and incur expenses, (ii) being reviewed by the Company’s chief operating decision maker (“CODM”) for decisions about resources to be allocated and assess its performance and (iii) having discrete financial information. Although we review our service and product offerings (rentals, sales and aftermarket services) to analyze the nature of our revenue, costs and expenses, the net income and non-GAAP financial measures including EBITDA and Adjusted gross margin are not captured or analyzed by these categories. Our chief executive officer (“CEO”) serves as the CODM and does not make resource allocation decisions or assess the performance of the business based on these service and product offerings, but rather on the entire entity in the aggregate. Accordingly, the measures of profit and loss and total assets are effectively those of the Company as a whole as reflected in these Consolidated Financial Statements. Based on these facts and underlying circumstances described further below, we have concluded that we operate in one business segment.

We are primarily engaged in the business of leasing natural gas and electric compression equipment to our customers. In addition, we design, sell, install, service and maintain compressors and related equipment and parts. These business activities are similar in all geographic areas in which we operate. Our customers primarily consist of entities in the business of producing oil and gas. The maintenance and service of our products is consistent across the entire Company and is performed by a dedicated group of employees via an internal fleet of vehicles. The regulatory environment is similar in every jurisdiction in that the most impacting regulations and practices are the result of federal energy policy.

Recently Adopted Accounting Pronouncements

In December 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-09 “Income Taxes (Topics 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”) to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. We elected to early adopt ASU 2023-09 effective with our financial reporting for the year ended December 31, 2024 and have applied the provisions on a retrospective basis for all periods presented in these Consolidated Financial Statements. Accordingly, the enhanced disclosures required of ASU 2023-09 are provided in Note 11.

In November 2023, the FASB issued ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”) which expands annual and interim disclosure requirements for reportable segments, primarily through enhanced disclosures about significant segment expenses. We adopted ASU 2023-07 effective January 1, 2024 and the required disclosures are referenced above in our discussion of Segments and Related Information.

Recently Issued Accounting Pronouncements Pending Adoption

In November 2024, the FASB issued ASU 2024-03 “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expense” (“ASU 2024-03”) which expands annual and interim disclosures expenses for certain types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) in commonly presented expense captions (such as cost of sales, selling, general & administrative expenses, and research and development). ASU 2024-03 is effective for annual periods beginning January 1, 2027, and for interim periods beginning January 1, 2028, with early adoption permitted. The adoption of ASU 2024-03 is not expected to have a material impact on our Consolidated Financial Statements or disclosures.

Description of Business	12 Months Ended
Description of Business	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of BusinessNatural Gas Services Group, Inc. (the “Company,” “NGS,” “Natural Gas Services Group,” “we,” “us” or “our”) (a Colorado corporation), is a leading provider of natural gas and electric compression equipment, technology and services to the energy industry. We rent, design, install, service and maintain compressors and related equipment and parts for our customers’ oil and gas production and processing facilities, generally using equipment from OEM suppliers along with limited in-house assembly. We are headquartered in Southlake, Texas, with administrative offices in Midland, Texas, an engineering facility located in Tulsa, Oklahoma, and service facilities located in major oil and gas producing basins in the continental United States (“U.S.”).

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		12 Months Ended
	Mar. 04, 2026	Feb. 09, 2026	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2025
Subsequent Event [Line Items]
Dividends amount (in dollars per share)			$ 0.11	$ 0.10
Dividend amount			$ 1,383	$ 1,254	$ 2,665
Subsequent Event
Subsequent Event [Line Items]
Dividends amount (in dollars per share)		$ 0.11
Dividend amount	$ 1,400

Income Taxes - Schedule of Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current income tax benefit (expense):
Federal	$ 156	$ (88)	$ 0
State	(102)	(114)	(35)
Total current income tax benefit (expense)	54	(202)	(35)
Deferred income tax (expense) benefit:
Federal	(5,703)	(4,456)	(1,940)
State	(954)	219	102
Total deferred income tax expense	(6,657)	(4,237)	(1,838)
Provision for income taxes	$ (6,603)	$ (4,439)	$ (1,873)

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details

Revenues from Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Rental	$ 164,326	$ 144,236	$ 106,159
Total revenue	172,315	156,742	121,167
Parts
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,120	5,106	6,311
Other (Compressors/Rebuilds)
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,872	2,507	2,610
Sales
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,992	7,613	8,921
Aftermarket services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3,997	$ 4,893	$ 6,087

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Number of Shares Underlying Stock Options
Outstanding, beginning of period (in shares)	113,751
Granted (in shares)	44,250
Vested (in shares)	(14,833)
Canceled/Forfeited (in shares)	(8,833)
Expired (in shares)	(23,167)
Outstanding, end of period (in shares)	111,168	113,751
Exercisable (in shares)	45,919
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 20.44
Granted (in dollars per share)	22.34
Vested (in dollars per share)	14.38
Canceled/Forfeited (in dollars per share)	23.16
Expired (in dollars per share)	22.90
Outstanding, end of period (in dollars per share)	21.28	$ 20.44
Exercisable (in dollars per share)	$ 20.01
Weighted Average Remaining Contractual Life (years)
Outstanding, weighted average remaining contractual life	7 years 3 months 7 days	5 years 10 months 2 days
Exercisable, weighted average remaining contractual life	5 years
Aggregate Intrinsic Value
Outstanding, aggregate intrinsic value	$ 1,375	$ 747
Granted, aggregate intrinsic value	0
Vested, aggregate intrinsic value	186
Canceled/Forfeited, aggregate intrinsic value	31
Expired, aggregate intrinsic value	0
Exercisable, aggregate intrinsic value	$ 626

Trade Accounts Receivable - Schedule of Provision for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,249	$ 823	$ 338
Provision for credit losses	155	433	492
Write-offs	(1,087)	(7)	(7)
Ending balance	$ 317	$ 1,249	$ 823

Property and Equipment

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Property and Equipment

The following table summarizes our property and non-rental equipment as of the dates presented:


	December 31,
	2025		2024
Land	$	1,562	$	1,680
Building	16,703		19,140
Leasehold improvements	1,026		1,346
Office equipment and furniture	2,099		2,057
Computer hardware and software	619		589
Machinery and equipment	5,068		4,430
Vehicles	15,315		12,739
Work-in-progress	1,137		168
	43,529		42,149
Less accumulated depreciation (1)	(23,010)		(19,160)
Total	$	20,519	$	22,989

(1) Includes $2.6 million recognized as an impairment in 2025 as discussed below.

In connection with our efforts to plan for an eventual sale of our former corporate headquarters facility including a building and land in Midland, Texas (the “Former Headquarters Property”), we undertook certain actions in the fourth quarter of 2025 to begin building-out a new leased office facility in Midland, Texas. While the Former Headquarters Property remained in use as of December 31, 2025, these actions triggered a review for impairment of the Former Headquarters Property consistent with our plans to relocate to the new leased facility in 2026. In our evaluation for the impairment, the cash flows that we considered were those that we expect to receive from a sale of the Former Headquarters Property, less costs to sell, or fair value. As the carrying value of the Former Headquarters Property exceeded the fair value less costs to sell, we recognized an impairment of $2.6 million in the fourth quarter of 2025. Subsequently, we entered into an exclusive listing agreement in February 2026 for the sale of the Former Headquarters Property (see Note 19).

Depreciation expense for property and equipment was $3.9 million, $2.4 million and $2.4 million for the years ended December 31, 2025, 2024 and 2023, respectively.

During 2025, we reclassified certain items of property and equipment attributable to our former Midland Facility with a carrying value of $2.2 million to assets held for sale (see Note 5).

Earnings per Share

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Earnings per Share

The following table reconciles the numerators and denominators of the basic and diluted earnings (loss) per share computation for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Numerator for basic and diluted earnings per share:
Net income	$	19,928	$	17,227	$	4,747
Denominator for basic earnings per common share:
Weighted average common shares outstanding - Basic	12,538		12,412		12,316
Denominator for diluted earnings per share:
Weighted average common shares outstanding	12,538		12,412		12,316
Dilutive effect of stock-based compensation awards	157		142		67
Weighted average common shares outstanding - Diluted	12,695		12,554		12,383
Earnings per share:
Basic	$	1.59	$	1.39	$	0.39
Diluted	$	1.57	$	1.37	$	0.38

The following table summarizes the actual number of stock-based compensation awards that were excluded from the determination of diluted earnings per share due to their anti-dilutive effect for the periods presented:


	Year Ended December 31,
	2025	2024	2023
Stock options	89,667	83,917	129,751
Restricted stock and RSUs	—	13,345	10,984

	89,667	97,262	140,735

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Principles of Consolidation and Basis of Presentation

Use of Estimates

Cash and Cash Equivalents

Accounts Receivable and Credit Losses

Revenue Recognition

The following is a description of principal activities from which we generate our revenue and the accounting policies that we apply for the recognition thereof:

Inventory Valuation

Long-Lived Assets

Rental equipment

years

Buildings and leasehold improvements

years

Machinery, equipment and furniture

years

Computer hardware and software

years

Vehicles

years

Impairment of Rental Equipment and property and equipment

Intangible Assets

Leases

Internal-Use Software

Income Taxes

Our policy regarding income tax interest and penalties is to charge those items as components of interest expense and other income (expense), respectively.

Capitalized Interest

Fair Value Measurement

Level 1 - quoted prices in an active market for identical assets or liabilities;

Level 3 - valuation methodology with unobservable inputs that are significant to the fair value measurement.

Segments and Related Information

Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Pending Adoption

Recently Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements Pending Adoption

Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table reconciles the numerators and denominators of the basic and diluted earnings (loss) per share computation for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Numerator for basic and diluted earnings per share:
Net income	$	19,928	$	17,227	$	4,747
Denominator for basic earnings per common share:
Weighted average common shares outstanding - Basic	12,538		12,412		12,316
Denominator for diluted earnings per share:
Weighted average common shares outstanding	12,538		12,412		12,316
Dilutive effect of stock-based compensation awards	157		142		67
Weighted average common shares outstanding - Diluted	12,695		12,554		12,383
Earnings per share:
Basic	$	1.59	$	1.39	$	0.39
Diluted	$	1.57	$	1.37	$	0.38

Schedule of Determination of Diluted Earnings Per Share


	Year Ended December 31,
	2025	2024	2023
Stock options	89,667	83,917	129,751
Restricted stock and RSUs	—	13,345	10,984

	89,667	97,262	140,735

Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Schedule of Property and Non-Rental Equipment

Depreciation is computed using the straight-line method over the estimated useful lives of the major asset categories as follows:

Rental equipment

years

Buildings and leasehold improvements

years

Machinery, equipment and furniture

years

Computer hardware and software

years

Vehicles

years

The following table summarizes our rental equipment and accumulated depreciation as of the dates presented:


	December 31,
	2025		2024
Compressor units	$	712,693	$	579,373
Work-in-progress	24,894		51,662
	737,587		631,035
Accumulated depreciation	(239,062)		(216,014)
Rental equipment, net of accumulated depreciation	$	498,525	$	415,021

The following table summarizes our property and non-rental equipment as of the dates presented:


	December 31,
	2025		2024
Land	$	1,562	$	1,680
Building	16,703		19,140
Leasehold improvements	1,026		1,346
Office equipment and furniture	2,099		2,057
Computer hardware and software	619		589
Machinery and equipment	5,068		4,430
Vehicles	15,315		12,739
Work-in-progress	1,137		168
	43,529		42,149
Less accumulated depreciation (1)	(23,010)		(19,160)
Total	$	20,519	$	22,989

(1) Includes $2.6 million recognized as an impairment in 2025 as discussed below.

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

Schedule of Dividends Declared

The following table summarizes our dividends declared and paid in cash for the periods presented:


Quarterly Period Ended	Dividends Declared per Share		Dividends Paid
December 31, 2025	$	0.11	$	1,383
September 30, 2025	$	0.10	$	1,254

Supplemental Balance Sheet Disclosures (Tables)

12 Months Ended

Dec. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accrued Liabilities

The following table summarizes the components of accrued liabilities as of the dates presented:


	December 31
	2025		2024
Accrued purchases	$	4,960	$	2,085
Compensation	3,121		3,483
Current operating leases	462		153
Interest	273		269
Sales taxes	421		355
Professional fees	426		393
Other	799		950
	$	10,462	$	7,688

Leases (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Schedule of Balance Sheet Impact

The following table reflects the amounts related to leases that are recorded on our Consolidated Balance Sheets as of the dates presented:


	Classification on Consolidated	December 31,
Description	Balance Sheets	2025			2024
Operating lease assets	Other assets	$	2,373		$	607

Current operating lease liabilities	Accrued liabilities	$	462		$	153
Noncurrent operating lease liabilities	Other long-term liabilities	1,911			454
Total lease liabilities		$	2,373		$	607

Weighted average remaining lease term (in years)		4.9			3.8
Weighted average discount rate		7.4		%	8.3		%

Schedule of Cash Flow Impact

The following table summarizes the cash paid for amounts included in the measurement of liabilities included in our Consolidated Statements of Cash Flows for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Operating lease cost (1) (2)	$	1,010	$	712	$	485
Finance lease cost (3)	$	—	$	622	$	95

(1) Lease costs are classified in the Consolidated Statements of Operations within cost of revenues and selling, general and administrative expenses.

(2) Includes costs of $0.6 million, $0.1 million and $0.3 million for leases with terms of 12 months or less and $0.4 million, $0.6 million and $0.2 million for leases with terms greater than 12 months for the years ended December 31, 2025, 2024 and 2023, respectively.

(3) All finance leases were terminated during 2024.

Schedule of Future Maturities of Lease Liabilities

The following summarizes the future maturities of our lease liabilities for the periods presented:


Year Ending December 31,
2026	$	594
2027	573
2028	554
2029	455
2030	361
Thereafter	323
Total lease payments	2,860
Less: Imputed interest	(487)
Total	$	2,373

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Summary of Unvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Shares
Unvested, beginning of period (in shares) \| shares	48,998
Granted (in shares) \| shares	44,250
Vested (in shares) \| shares	(20,999)
Canceled/Forfeited (in shares) \| shares	(7,000)
Unvested, end of period (in shares) \| shares	65,249
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) \| $ / shares	$ 11.35
Granted (in dollars per share) \| $ / shares	12.07
Vested (in dollars per share) \| $ / shares	10.61
Canceled/Forfeited (in dollars per share) \| $ / shares	12.29
Unvested, end of period (in dollars per share) \| $ / shares	$ 11.97

Trade Accounts Receivable

12 Months Ended

Dec. 31, 2025

Receivables [Abstract]

Trade Accounts Receivable

The following table summarizes our trade accounts receivable from customers as of the dates presented:


	December 31,
	2025		2024
Trade accounts receivable
Rentals	$	16,565	$	14,218
Sales and aftermarket services	2,249		2,657
	18,814		16,875
Less: Provision for credit losses	(317)		(1,249)
Total trade accounts receivable, net	$	18,497	$	15,626

Our trade accounts receivable consist of customer obligations due under normal trade terms for (i) operating leases for the use of our compressors, (ii) the sale of custom/assembled compressors and parts, as well as exchange/rebuilding customer owned compressors and sale of used rental equipment and (iii) the performance of aftermarket services.

Major Customers and Concentration of Credit Risk

Rental revenue and sales from Occidental Permian, LTD. (“Oxy”) and Devon Energy Corporation (“Devon”) in 2025, 2024 and 2023 amounted to 59 percent, 59 percent and 52 percent of revenue on a combined basis, respectively. No other single customer accounted for more than 10 percent of our revenues in 2025, 2024 and 2023. Oxy’s and Devon’s accounts receivable balances amounted to 62 percent and 60 percent of our accounts receivable as of December 31, 2025 and 2024, respectively. No other customers amounted to more than 10 percent of our accounts receivable on a combined basis as of December 31, 2025 and 2024, respectively.

Provision for Credit Losses

The following table summarizes the changes in our provision for credit losses for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Beginning balance	$	1,249	$	823	$	338
Provision for credit losses	155		433		492

Write-offs	(1,087)		(7)		(7)
Ending balance	$	317	$	1,249	$	823

Management believes that the provision is adequate; however, actual write-offs may exceed the recorded allowance. The substantial write-off of the provision for credit losses during 2025 reflects certain aged receivables that are no longer deemed collectible.

Trade Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2025

Receivables [Abstract]

Schedule of Trade Accounts Receivable

The following table summarizes our trade accounts receivable from customers as of the dates presented:


	December 31,
	2025		2024
Trade accounts receivable
Rentals	$	16,565	$	14,218
Sales and aftermarket services	2,249		2,657
	18,814		16,875
Less: Provision for credit losses	(317)		(1,249)
Total trade accounts receivable, net	$	18,497	$	15,626

Schedule of Provision for Credit Losses

The following table summarizes the changes in our provision for credit losses for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Beginning balance	$	1,249	$	823	$	338
Provision for credit losses	155		433		492

Write-offs	(1,087)		(7)		(7)
Ending balance	$	317	$	1,249	$	823

Revenues from Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table summarizes our revenue disaggregated by product or service type for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Rental	$	164,326	$	144,236	$	106,159
Sales
Parts	2,120		5,106		6,311
Other (Compressors/Rebuilds)	1,872		2,507		2,610
	3,992		7,613		8,921
Aftermarket services	3,997		4,893		6,087
Total revenue	$	172,315	$	156,742	$	121,167

Trade Accounts Receivable - Schedule of Trade Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Trade accounts receivable
Trade accounts receivable	$ 18,814	$ 16,875
Less: Provision for credit losses	(317)	(1,249)
Total trade accounts receivable, net	18,497	15,626
Rentals
Trade accounts receivable
Trade accounts receivable	16,565	14,218
Sales and aftermarket services
Trade accounts receivable
Trade accounts receivable	$ 2,249	$ 2,657

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Management of Cybersecurity Risk To manage these risks, we maintain a cybersecurity program designed to help identify, assess and respond to cybersecurity threats. The program includes monitoring of information systems, access controls, endpoint protection, vulnerability management and specific incident procedures as described below. We utilize artificial intelligence-driven cybersecurity technologies to monitor and detect potential threats across our systems. These tools include email security and threat detection capabilities designed to identify phishing and other malicious email activity. In addition, we have mobile device management controls for company-issued mobile devices. We also maintain policies and procedures intended to address cybersecurity risks associated with third-party service providers and vendors that support our operations. These processes include evaluating security practices when onboarding certain vendors and monitoring technology environments used by the Company. Furthermore, our employees participate in mandatory cybersecurity awareness and training activities intended to reduce risks associated with phishing and other forms of social engineering. As referenced above, we also maintain a Cybersecurity Incident Response Plan (“Incident Response Plan”) which outlines how we identify, manage and respond to cybersecurity risks and incidents. The Incident Response Plan contains the following elements: •Incident Identification and Reporting – outlines the steps used to promptly identify cybersecurity risks and incidents and report those through appropriate means; •Incident Assessment – after collecting information about a potential risk, threat or incident, a protocol has been developed and outlined that will allow a cross-functional team to complete an assessment; •Incident Containment – provides for actions to be taken to isolate and attempt to contain and minimize any potential threat; •Resolution and Recovery – outlines the steps to be taken, based upon the incident and the systems potentially impacted, to mitigate the potential impact of the threat and restore system access and functionality in the minimum amount of time; •Training and Awareness – development of training and awareness programs to allow employees to understand how to promptly respond in the event of a perceived threat.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	we also maintain a Cybersecurity Incident Response Plan (“Incident Response Plan”) which outlines how we identify, manage and respond to cybersecurity risks and incidents.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Our Board of Directors provides oversight of our risks and is assisted by our senior leadership in the exercise of these responsibilities.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board of Directors provides oversight of our risks and is assisted by our senior leadership in the exercise of these responsibilities.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Vice President, Information Technology (“VP-IT”) is responsible for overseeing cybersecurity operations, including monitoring security risks, maintaining security technologies and coordinating responses to cybersecurity incidents. Our VP-IT is responsible for reporting material incidents to our Chief Executive Officer, who in turn will report to the Chairman of the Board of Directors.
Cybersecurity Risk Role of Management [Text Block]	Cybersecurity risk management is overseen by our senior leadership as part of its broader enterprise risk management processes. Our Vice President, Information Technology (“VP-IT”) is responsible for overseeing cybersecurity operations, including monitoring security risks, maintaining security technologies and coordinating responses to cybersecurity incidents. Our VP-IT is responsible for reporting material incidents to our Chief Executive Officer, who in turn will report to the Chairman of the Board of Directors. Our VP-IT has over 25 years of experience spanning programming, architecture, applications development and IT management.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Cybersecurity risk management is overseen by our senior leadership as part of its broader enterprise risk management processes. Our Vice President, Information Technology (“VP-IT”) is responsible for overseeing cybersecurity operations, including monitoring security risks, maintaining security technologies and coordinating responses to cybersecurity incidents. Our VP-IT is responsible for reporting material incidents to our Chief Executive Officer, who in turn will report to the Chairman of the Board of Directors. Our VP-IT has over 25 years of experience spanning programming, architecture, applications development and IT management.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our VP-IT has over 25 years of experience spanning programming, architecture, applications development and IT management.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Our VP-IT is responsible for reporting material incidents to our Chief Executive Officer, who in turn will report to the Chairman of the Board of Directors.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Long-Term Debt - Narrative (Details) $ in Thousands			3 Months Ended	12 Months Ended
Long-Term Debt - Narrative (Details) $ in Thousands	Apr. 18, 2025 USD ($)	Apr. 17, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($)
Line of Credit Facility [Line Items]
Debt instrument, fee amount	$ 1,300
Credit facility			$ 170,000	$ 230,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing base amount available	400,000	$ 300,000		400,000
Potential increase in borrowing capacity	$ 100,000	$ 50,000		100,000
Decrease in interest rates	0.50%
Interest rate	0.75%
Potential maximum borrowing capacity				500,000
Credit facility				$ 230,000
Weighted average interest rate				6.59%
Remaining borrowing capacity				$ 170,000
Remaining determination amount				$ 400,000
Percentage of eligible non investment grade decors				85.00%
Percentage of eligible inventory				50.00%
Line of credit facility, non exceeding cap of components				$ 2,500
Percentage of eligible compressors for extension of credit				95.00%
Term for depreciation				25 years
Percentage of net liquidation value of eligible compressors for extension of credit				80.00%
Percentage of eligible value at cost				80.00%
Commitment fee percentage				0.375%
Maximum leverage ratio allowed			3.5
Fixed charge coverage ratio				1.25
Revolving Credit Facility \| Maximum
Line of Credit Facility [Line Items]
Default trigger, certain defaults of other company indebtedness, amount				$ 1,000
Default trigger, rendering of certain judgments, amount				$ 1,000
Revolving Credit Facility \| Federal Fund Rate
Line of Credit Facility [Line Items]
Variable rate, applicable margin				0.50%
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Variable rate, applicable margin				1.00%
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) \| Minimum
Line of Credit Facility [Line Items]
Variable rate, applicable margin				2.50%
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) \| Maximum
Line of Credit Facility [Line Items]
Variable rate, applicable margin				3.25%
Revolving Credit Facility \| Base Rate Loans \| Minimum
Line of Credit Facility [Line Items]
Variable rate, applicable margin				1.50%
Revolving Credit Facility \| Base Rate Loans \| Maximum
Line of Credit Facility [Line Items]
Variable rate, applicable margin				2.25%

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2020
Operating Loss Carryforwards [Line Items]
Income taxes receivable and prepayments		$ 14,056,000	$ 11,282,000		$ 15,000,000
Net operating loss carryforward		124,200,000
Amount of reserve for uncertain tax positions		0	0
Income taxes paid, net of refunds received		259,000	$ 0	$ 0
United States
Operating Loss Carryforwards [Line Items]
Income taxes paid, net of refunds received		100,000
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward		58,500,000
Texas
Operating Loss Carryforwards [Line Items]
Income taxes paid, net of refunds received		100,000
Tax Year 2019
Operating Loss Carryforwards [Line Items]
Income taxes receivable and prepayments		$ 11,500,000
Forecast \| Tax Year 2015, 2016 And 2017
Operating Loss Carryforwards [Line Items]
Income tax refunds	$ 10,200,000
Interest income	2,100,000
Income tax expense	12,300,000
Forecast \| Tax Year 2019
Operating Loss Carryforwards [Line Items]
Income tax refunds	1,500,000
Interest income	300,000
Income tax expense	$ 1,800,000

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2025
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions During the years ended December 31, 2025, 2024 and 2023 we sold less than $0.1 million, $0.7 million, and $0.9 million, respectively, of compressor components to N-G Joint Venture, LLC (“N-G”) our 14% joint venture. As of December 31, 2025 and 2024, we had accounts receivable of $0.1 million and $0.1 million with N-G, respectively. During the years ended December 31, 2024 and 2023, we paid less than $0.1 million and $0.3 million, respectively, to Mill Road Capital, a shareholder that previously held more than five percent of outstanding shares, for expense reimbursements primarily related to a cooperation agreement that expired in 2025. No amounts were paid during 2025.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-5

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/850/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-6

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The following table summarizes our provision for income taxes for the presented:


	Year Ended December 31,
	2025		2024		2023
Current income tax benefit (expense):
Federal	$	156	$	(88)	$	—
State	(102)		(114)		(35)
Total current income tax benefit (expense)	54		(202)		(35)
Deferred income tax (expense) benefit:
Federal	(5,703)		(4,456)		(1,940)
State	(954)		219		102
Total deferred income tax expense	(6,657)		(4,237)		(1,838)
Provision for income taxes	$	(6,603)	$	(4,439)	$	(1,873)

Schedule of Effective Income Tax Rate Reconciliation

The following table summarizes the effective tax rates for the periods presented:


	Year Ended December 31,
	2025				2024				2023
Statutory rate	$	(5,571)	21.0	%	$	(4,550)	21.0	%	$	(1,390)	21.0	%
State and local taxes	(1,035)		3.9	%	130		(0.6)	%	86		(1.3)	%
Stock-based compensation	—		—	%	195		(0.9)	%	(46)		0.7	%
Nondeductible compensation	(251)		0.9	%	(65)		0.3	%	(543)		8.2	%
Other	254		(1.0)	%	(149)		0.7	%	20		(0.3)	%
Effective rate	$	(6,603)	24.8	%	$	(4,439)	20.5	%	$	(1,873)	28.3	%

Schedule of Deferred Tax Assets and Liabilities

The following table summarizes the income tax effects of temporary differences that give rise to significant portions of deferred income tax assets and (liabilities) as of the dates presented:


	December 31,
	2025		2024
Deferred income tax assets:
Net operating loss carryforward	$	28,356	$	20,600
Research and development credits	1,026		1,011
Stock-based compensation	132		269
Interest expense	285		2,756
Inventory reserves	794		1,293
Deferred compensation	693		827
Other	513		569
Total deferred income tax assets	31,799		27,325
Deferred income tax liabilities:
Property and equipment	(84,329)		(73,198)
Total deferred income tax liabilities	(84,329)		(73,198)
Net deferred income tax liabilities	$	(52,530)	$	(45,873)

Income Taxes - Schedule of Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory rate	$ (5,571)	$ (4,550)	$ (1,390)
State and local taxes	(1,035)	130	86
Stock-based compensation	0	195	(46)
Nondeductible compensation	(251)	(65)	(543)
Other	254	(149)	20
Provision for income taxes	$ (6,603)	$ (4,439)	$ (1,873)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate (as a percent)	21.00%	21.00%	21.00%
State and local taxes (as a percent)	3.90%	(0.60%)	(1.30%)
Stock-based compensation (as a percent)	0.00%	(0.90%)	0.70%
Nondeductible compensation (as a percent)	0.90%	0.30%	8.20%
Other (as a percent)	(1.00%)	0.70%	(0.30%)
Effective Rate (as a percent)	24.80%	20.50%	28.30%

Inventory - Schedule of Inventory Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Inventory Valuation Reserves [Roll Forward]
Beginning balance	$ 5,867	$ 4,004	$ 120
Allowance for obsolescence	1,114	1,863	3,965
Write-offs	(3,409)	0	(81)
Ending balance	$ 3,572	$ 5,867	$ 4,004

Long-Term Debt

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Long-Term Debt

Our outstanding long-term debt consists of the following as of the dates presented:


	December 31,
	2025		2024
Credit facility	$	230,000	$	170,000

We have a senior secured revolving credit agreement, as amended (the “Credit Facility”) with Texas Capital Bank, National Association as administrative agent (the “Administrative Agent”), TCBI Securities, Inc., Bank of America, N.A., and the Huntington National Bank as joint lead arrangers and joint book runners, and the lenders party thereto (the “Lenders”). On April 18, 2025, we entered into the Fourth Amendment to the Amended and Restated Credit Agreement (the “Fourth Amendment”) with the Lenders to (i) increase the total commitment to $400.0 million from $300.0 million, (ii) expand the accordion feature to $100.0 million from $50.0 million, (iii) reduce the interest rates by 50 to 75 basis points at comparable leverage levels and, (iv) provide for a more flexible leverage covenant that began on September 30, 2025. In connection with the Fourth Amendment, we incurred fees and debt issue costs of $1.3 million.

The Credit Facility provides for a total commitment of $400.0 million. We also have a right to request from the Lenders, an increase to the potential aggregate commitment of up to $100.0 million; provided, however, the aggregate commitment amount is not permitted to exceed $500.0 million. The accordion feature is subject to certain conditions, including the absence of a default, the consent of new or existing lenders willing to provide additional commitments, and our pro forma compliance with the Credit Facility’s financial covenants. The obligations under the Credit Facility are secured by a first priority lien on most of our assets, including inventory and certain accounts receivable as well as a variable number of our leased compressor units. The maturity date of the Credit Facility is February 28, 2028.

As of December 31, 2025, we had $230.0 million outstanding under our Credit Facility with a weighted average interest rate of 6.59%. As of December 31, 2025, we had approximately $170.0 million available for borrowing under the Credit Facility, subject to borrowing base determination that was determined to be $400.0 million. As of December 31, 2025, we were in compliance with all financial covenants in our Credit Facility.

Borrowing Base. At any time before the maturity of the Credit Facility, we may draw, repay and re-borrow amounts available under the borrowing base up to the maximum aggregate availability discussed above. Generally, the borrowing base equals the sum of (a) 85% of eligible accounts receivable owed to us, plus (b) 50% of the eligible inventory, valued at the lower of cost or market value at such time, subject to a cap of this component not to exceed $2.5 million, plus (c) the lesser of (i) 95% of the net book value of the compressors that the Administrative Agent has determined are eligible for the extension of credit, valued at the lower of cost or market value with depreciation not to exceed 25 years, at such time and (ii) 80% of the net liquidation value percentage of the net book value of the eligible compressors that the Administrative Agent has determined are eligible for the extension of credit, valued at the lower of cost or market value with depreciation not to exceed 25 years, at such time, plus (d) 80% of the net book value, valued at the lower of cost (excluding any costs for capitalized interest or other noncash capitalized costs) or market of the eligible new compressor fleet, minus (e) any required availability reserves determined by the Administrative Agent in its sole discretion. The Administrative Agent may adjust the borrowing base components if material deviations in the collateral are discovered in future audits of the collateral.

Interest and Fees. Under the terms of the Credit Facility, we have the option of selecting the applicable variable rate for each revolving loan, or portion thereof, of either (a) the Base Rate (as defined below) plus the Applicable Margin, or (b) in the case of a Term Secured Overnight Financing Rate (“SOFR”) Loan, the Adjusted Term SOFR rate plus the Applicable Margin. “Base Rate” means, for any day, a rate of interest per annum equal to the highest of (a) the prime rate for such day; (b) the sum of the federal funds rate for such day plus 0.50%; and (c) the Adjusted Term SOFR for such day plus 1.00%. The Applicable Margin is determined based upon the leverage ratio as set forth in the most recent compliance certificate received by the Administrative Agent for each fiscal quarter from time to time pursuant to the Credit Facility. Depending on the leverage ratio, the Applicable Margin can be 1.50% to 2.25% for Base Rate Loans (as defined in the Credit Facility) and 2.50% to 3.25% for Term SOFR Loans and for requested letters of credit. In addition, we are required to pay a monthly commitment fee on the daily average unused amount of the commitment while the Credit Facility is in effect at an annual rate equal to 0.375% of the unused commitment amount. Accrued interest is payable monthly on outstanding principal amounts and unused commitment fee, provided that accrued interest on Term SOFR Loans is payable at the end of each interest period, but in no event less frequently than quarterly.

Covenants. The Credit Facility contains customary representations and warranties, as well as covenants which, among other things, condition or limit our ability to incur additional indebtedness and liens; enter into transactions with affiliates; make acquisitions in excess of certain amounts; pay dividends; redeem or repurchase capital stock or senior notes; make investments or loans; make negative pledges; consolidate, merge or effect asset sales; or change the nature of our business. In addition, we are subject to certain financial covenants in the Credit Facility that require us to maintain (i) a leverage ratio, as defined, lesser than or equal to (a) 3.50 to 1.00 for each fiscal quarter and (ii) a fixed charge coverage ratio greater than or equal to 1.25 to 1.00 as of the last day of each fiscal quarter.

Events of Default and Acceleration. The Credit Facility contains customary events of default for credit facilities of this size and type, and includes, without limitation, payment defaults; defaults in performance of covenants or other agreements contained in the Credit Facility and the other transaction documents; inaccuracies in representations and warranties; certain defaults, termination events or similar events; certain defaults with respect to any other Company indebtedness in excess of $1.0 million; certain bankruptcy or insolvency events; the rendering of certain judgments in excess of $1.0 million; certain ERISA events; certain change in control events and the defectiveness of any liens. Obligations outstanding under the Credit Facility may be accelerated upon the occurrence of an event of default.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6
-Subparagraph (b)
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-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 1
-Subparagraph (d)
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/470/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 22: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Revenue from External Customer [Line Items]
Cash equivalents, qualification, maximum original maturity of short-term investments	3 months
Amortization expense		$ 100,000	$ 100,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Impairments
Impairment charge for intangible asset		$ 700,000
Uncertain tax positions	$ 0	$ 0
Number of business segments \| segment	1
Minimum \| Rental equipment
Revenue from External Customer [Line Items]
Property and equipment, estimated useful life	15 years
Maximum \| Rental equipment
Revenue from External Customer [Line Items]
Property and equipment, estimated useful life	25 years
Rental Contracts, Excluding Large Horsepower Compressors \| Minimum
Revenue from External Customer [Line Items]
Rental contract term	12 months
Rental Contracts, Large Horsepower Compressors \| Maximum
Revenue from External Customer [Line Items]
Rental contract term	60 months

Leases - Schedule of Future Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Year Ending December 31,
2026	$ 594
2027	573
2028	554
2029	455
2030	361
Thereafter	323
Total lease payments	2,860
Less: Imputed interest	(487)
Total	$ 2,373

Rental Equipment - Schedule of Future Minimum Rent Payments (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Leases [Abstract]
2026	$ 130,082
2027	98,189
2028	66,835
2029	39,213
2030	17,519
Total	$ 351,838

Leases - Schedule of Balance Sheet Impact (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Operating lease assets	$ 2,373	$ 607
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Current operating lease liabilities	$ 462	$ 153
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Noncurrent operating lease liabilities	$ 1,911	$ 454
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Total lease liabilities	$ 2,373	$ 607
Weighted average remaining lease term (in years)	4 years 10 months 24 days	3 years 9 months 18 days
Weighted average discount rate	7.40%	8.30%

Rental Equipment - Schedule of Rental Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Rental equipment, gross	$ 737,587	$ 631,035
Accumulated depreciation	(239,062)	(216,014)
Rental equipment, net of accumulated depreciation	498,525	415,021
Compressor units
Property, Plant and Equipment [Line Items]
Rental equipment, gross	712,693	579,373
Work-in-progress
Property, Plant and Equipment [Line Items]
Rental equipment, gross	$ 24,894	$ 51,662

Supplemental Balance Sheet Disclosures

12 Months Ended

Dec. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplemental Balance Sheet Disclosures

The following table summarizes the components of accrued liabilities as of the dates presented:


	December 31
	2025		2024
Accrued purchases	$	4,960	$	2,085
Compensation	3,121		3,483
Current operating leases	462		153
Interest	273		269
Sales taxes	421		355
Professional fees	426		393
Other	799		950
	$	10,462	$	7,688

Cover - USD ($) $ in Millions	12 Months Ended
Cover - USD ($) $ in Millions	Dec. 31, 2025	Mar. 13, 2026	Jun. 30, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-31398
Entity Registrant Name	NATURAL GAS SERVICES GROUP, INC.
Entity Incorporation, State or Country Code	CO
Entity Tax Identification Number	75-2811855
Entity Address, Address Line One	601 State Street, Suite 400
Entity Address, City or Town	Southlake
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76092
City Area Code	(432)
Local Phone Number	262-2700
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	NGS
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 181.9
Entity Common Stock, Shares Outstanding		12,587,628
Documents Incorporated by Reference	Documents Incorporated by Reference Certain information called for in Items 10, 11, 12, 13 and 14 of Part III are incorporated by reference to the Registrant’s definitive proxy statement for the annual meeting of shareholders expected to be held on June 5, 2026.
Entity Central Index Key	0001084991
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false

Inventory - Schedule of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Inventory Disclosure [Abstract]
Allowance for inventory obsolescence, current	$ 2,552	$ 4,379
Parts and supplies, net of allowance of $2,552 and $4,379, respectively	20,104	17,706
Work-in-process	543	345
Inventory - current	20,647	18,051
Allowance for inventory obsolescence, noncurrent	1,020	1,488
Parts and supplies - long term, net of allowance of $1,020 and $1,488, respectively	0	0
Total inventory	$ 20,647	$ 18,051

Deferred Compensation Plan	12 Months Ended
Deferred Compensation Plan	Dec. 31, 2025
Compensation Related Costs [Abstract]
Deferred Compensation Plan	Deferred Compensation Plan We maintain a non-qualified deferred compensation plan (the “Deferred Compensation Plan”) for executive officers, directors and certain eligible employees. The assets of the Deferred Compensation Plan are held in a rabbi trust and are subject to additional risk of loss in the event of bankruptcy or insolvency of the Company. The Deferred Compensation Plan allows for deferral of up to 90 percent of a participant’s base salary, bonus, commissions, director fees and restricted stock and unit awards. Company owned life insurance (“COLI”) policies are held in the rabbi trust are utilized as a source of funding for the Deferred Compensation Plan. The cash surrender value of the COLI policies was $2.9 million and $3.0 million as of December 31, 2025 and 2024, respectively, with unrealized gains and (losses) related to the policies of $0.1 million, $0.2 million and $(0.2) million recorded as a component of Other income (expense) in our Consolidated Statements of Operations for the years ended December 31, 2025, 2024 and 2023, respectively. For deferrals of base salary, bonus, commissions and director fees, settlement payments are made to participants in cash, either in a lump sum or in periodic installments. The obligations to pay the deferred compensation and the deferred director fees are adjusted to reflect the positive or negative performance of investment measurement options selected by each participant and was $3.2 million and $3.8 million as of December 31, 2025 and 2024, respectively. The deferred obligations are included as a component of Other long-term liabilities on our Consolidated Balance Sheets. For deferrals of restricted stock awards, the Deferred Compensation Plan does not allow for diversification, therefore, distributions are paid in shares of our common stock and the obligations are carried at their grant date fair values. As of December 31, 2025 and 2024, respectively, there were no unvested restricted stock and units being deferred. As of December 31, 2025 and 2024, respectively we have released and issued 140,115 and 191,700 shares to the Deferred Compensation Plan with a value of $4.7 million and $4.8 million, respectively.

Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Numerator for basic and diluted earnings per share:
Net income	$ 19,928	$ 17,227	$ 4,747
Denominator for basic earnings per common share:
Weighted average common shares outstanding, Basic (in shares)	12,538	12,412	12,316
Denominator for diluted earnings per share:
Dilutive effect of stock-based compensation awards (in shares)	157	142	67
Weighted average common shares outstanding, Diluted (in shares)	12,695	12,554	12,383
Earnings per share:
Basic (in dollars per share)	$ 1.59	$ 1.39	$ 0.39
Diluted (in dollars per share)	$ 1.57	$ 1.37	$ 0.38

Assets Held for Sale and Restructuring Activities (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2025 USD ($) employee	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale		$ 0		$ 2,227
Number of employees terminated \| employee	8
Severance costs	$ 100
Restructuring and related cost, incurred cost		$ 100
Land and Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale				$ 2,200	$ 2,200
Former Chief Executive Officer
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance costs			$ 1,200

Stock-Based and Other Long-Term Incentive Compensation

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Stock-Based and Other Long-Term Incentive Compensation

We maintain two stockholder approved plans for the issuance of stock-based compensation awards to our employees, Board of Director members and certain independent contractors: (i) the 2019 Equity Incentive Plan, as amended (the “Equity Incentive Plan”), and (ii) the 1998 Stock Option Plan, as amended (the “Stock Option Plan”).

The following table summarizes the total stock-based compensation expense recognized during the periods presented:


	Year Ended December 31,
	2025		2024		2023
Equity-classified	$	2,126	$	1,821	$	2,054
Liability-classified (1)	440		248		—
	$	2,566	$	2,069	$	2,054

(1) Represents compensation expense associated with awards that may be settled in cash at the option of the grantee.

Equity Incentive Plan

The Equity Incentive Plan provides for up to 1,650,000 shares of common stock for issuance in the form of awards for: (i) stock options, (ii) stock appreciation rights, (iii) restricted awards in the form of restricted stock and restricted stock units (“RSUs”), (iv) performance share awards, including performance share unit (“PSUs”) and, (v) other equity-based awards. After consideration of the activity described in detail below, a total of 646,751 shares remained available for grant as of December 31, 2025.

Time-Vested Restricted Stock and Restricted Stock Units

The following table summarizes all restricted stock and RSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	131,183	$	16.39	5.15	$	3,516
Granted	75,031	$	22.78		$	1,709
Vested	(85,699)	$	15.96		$	2,150
Canceled/Forfeited	(15,050)	$	19.65		$	411
Outstanding, December 31, 2025	105,465	$	20.82	3.70	$	3,516

We recognized stock compensation expense from restricted stock and RSUs of $1.2 million, $1.3 million and $2.0 million for the years ended December 31, 2025, 2024 and 2023, respectively. As of December 31, 2025, there was a total of approximately $1.4 million of unrecognized compensation expense related to the unvested portion of the restricted stock and RSUs. This expense is expected to be recognized over the next 2.1 years.

Cash-Settled Restricted Stock Units

The 2025 and 2024 grant of RSUs to the non-employee members of our Board of Directors that can be settled in cash represent liability-classified awards. Accordingly, compensation expense associated with these awards accumulates as a component of Accrued liabilities on our Consolidated Balance Sheet until the awards vest and are settled. Compensation expense associated with these awards is based upon the fair value of NGS common stock at each reporting period relative to that portion of the service period that has passed. Accordingly, the compensation expense is variable in nature.

The following table summarizes all cash settled RSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	15,069	$	19.51	0.50	$	294
Granted	13,812	$	24.60		$	340
Vested	(12,259)	$	19.50		$	240
Canceled/Forfeited	(2,810)	$	19.57		$	55
Outstanding, December 31, 2025	13,812	$	24.60	0.42	$	380

Cumulative compensation expense attributable to the cash-settled RSUs can range from zero to a maximum based on the total number of units vesting multiplied by closing price of our common stock on the vesting date.

Performance Share Units

PSU awards, which have been granted to certain executive officers during the years ended December 31, 2025 and 2024, are based upon performance for a three-year period ending December 31, 2026 for the 2024 grants and December 31, 2027 for the 2025 grants measured against relative total shareholder return (“TSR”) compared to a peer group of companies as established by the Compensation Committee. The PSU award payouts range from zero (if the Company ranks below the 31.25 percentile) and up to 200% (if the Company ranks first) based upon our relative TSR performance ranking (subject to certain caps based on absolute TSR as defined in the PSU agreements).

With respect to vesting, the PSUs have both a service condition and a market condition. Due to the presence of the TSR measurement for the common equity of the peer companies, including NGS common stock, which is deemed a “market condition,” the grant-date fair values of the PSUs have been determined using a binomial pricing model, or a Monte Carlo simulation model.

The following table summarizes the weighted average grant date fair values of PSUs granted and the assumptions used in the Monte Carlo simulation model for the determination of the grant date fair values of our PSUs granted during the periods presented:


	Year Ended December 31,
	2025			2024
Weighted-average grant date fair value of PSUs granted	$	28.22		$	22.47
Risk free rate	3.64% to 3.93%			4.09% to 4.39%
Expected volatility	43.9% to 46.5%			43.4% to 44.2%
Expected dividend yield	—		%	—		%

The following table summarizes all PSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	56,764	$	22.47	2.22	$	—
Granted	41,724	$	28.22		$	—
Vested	8,160	$	22.48		$	—
Canceled/Forfeited	(12,147)	$	22.48		$	—
Outstanding, December 31, 2025	94,501	$	22.47	2.22	$	—

We recognized stock compensation expense from PSUs of $0.6 million and $0.3 million for the years ended December 31, 2025 and 2024, respectively. As of December 31, 2025, there was a total of approximately $1.1 million of unrecognized compensation expense related to the unvested portion of the PSUs. This expense is expected to be recognized over the next 1.6 years.

Stock Option Plan

The Stock Option Plan provides for the granting of incentive and non-qualified stock options for up to 1,000,000 shares of common stock. After consideration of the activity described in detail below, a total of, 395,169 shares remained available for grant as of December 31, 2025. While the Stock Option Plan expired on February 28, 2026, all stock options that were outstanding as of December 31, 2025 will remain subject to their vesting rights through their contractual lives. Any future grants of stock options will be sourced from the Equity Incentive Plan

Option awards are generally granted with an exercise price equal to the market price of our stock at the date of grant; those option awards generally vest in equal increments over three years of continuous service and have ten-year contractual terms. Certain option and share awards provide for accelerated vesting if there is a change in control of the Company (as defined in the Stock Option Plan).

The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model that applies the assumptions noted in the following table. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The expected life of options granted is based on the vesting period and historical exercise and post-vesting employment termination behavior for similar grants. We use historical data to estimate option exercise and employee termination within the valuation model; separate groups of employees that have similar historical exercise behavior are considered separately for valuation purposes.

The following table summarizes the weighted average grant date fair values of options granted and the assumptions used in the Black-Scholes option valuation model for their determination for the periods presented:


	Year Ended December 31,
	2025			2024			2023
Weighted-average grant date fair value of options granted	$	12.07		$	12.25		$	5.11
Risk free rate	4.07		%	4.36		%	3.99		%
Expected life	6.47			6.53			6.49
Expected volatility	50.04		%	48.25		%	47		%
Expected dividend yield	0.08		%	—		%	—		%

The following table summarizes all option activity during the year ended December 31, 2025:


	Number of Shares Underlying Stock Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	113,751	$	20.44	5.84	$	747
Granted	44,250	$	22.34		$	—
Exercised	(14,833)	$	14.38		$	186
Canceled/Forfeited	(8,833)	$	23.16		$	31
Expired	(23,167)	$	22.90		$	—
Outstanding, December 31, 2025	111,168	$	21.28	7.27	$	1,375
Outstanding, Exercisable, December 31, 2025	45,919	$	20.01	5.00	$	626

The following table summarizes information about our stock options outstanding as of December 31, 2025:


Range of Exercise Prices	Options Outstanding				Options Exercisable
	Shares	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Shares	Weighted Average Exercise Price
$0.01-$18.00	19,501	6.32	$	10.82	17,835	$	10.92
$18.01-$26.00	75,417	8.84	$	22.50	11,834	$	22.53
$26.01-$30.00	16,250	1.13	$	28.15	16,250	$	28.15
	111,168	7.27	$	21.28	45,919	$	20.01

The following table summarizes changes in our unvested stock options during the year December 31, 2025:


	Shares	Weighted Average Grant Date Fair Value
Unvested at December 31, 2024	48,998	$	11.35
Granted	44,250	$	12.07
Vested	(20,999)	$	10.61
Canceled/Forfeited	(7,000)	$	12.29
Unvested at December 31, 2025	65,249	$	11.97

We recognized stock compensation expense from stock options of $0.3 million, $0.2 million and $0.1 million for the years ended December 31, 2025, 2024 and 2023, respectively. As of December 31, 2025, there was $0.4 million of unamortized compensation cost related to unvested stock options.

Other Long-Term Incentive Compensation

From time to time and under certain circumstances, the Compensation Committee of our Board of Directors may grant cash-based incentive compensation awards that vest over periods greater than one year as a supplement to stock-based awards and in addition to customary annual incentive cash bonuses. Total compensation expense related to these long-term incentive awards was approximately $0.4 million for the year ended December 31, 2023. The awards associated with these compensation charges were fully vested and settled in cash prior to December 31, 2023. Accordingly, there were no amounts remaining as unrecognized compensation and no outstanding obligations as of December 31, 2025 and 2024 for these and any similar awards.

Stock-Based and Other Long-Term Incentive Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Based Compensation Expense

The following table summarizes the total stock-based compensation expense recognized during the periods presented:


	Year Ended December 31,
	2025		2024		2023
Equity-classified	$	2,126	$	1,821	$	2,054
Liability-classified (1)	440		248		—
	$	2,566	$	2,069	$	2,054

(1) Represents compensation expense associated with awards that may be settled in cash at the option of the grantee.

Schedule of Restricted Stock Units

The following table summarizes all restricted stock and RSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	131,183	$	16.39	5.15	$	3,516
Granted	75,031	$	22.78		$	1,709
Vested	(85,699)	$	15.96		$	2,150
Canceled/Forfeited	(15,050)	$	19.65		$	411
Outstanding, December 31, 2025	105,465	$	20.82	3.70	$	3,516

The following table summarizes all cash settled RSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	15,069	$	19.51	0.50	$	294
Granted	13,812	$	24.60		$	340
Vested	(12,259)	$	19.50		$	240
Canceled/Forfeited	(2,810)	$	19.57		$	55
Outstanding, December 31, 2025	13,812	$	24.60	0.42	$	380

Schedule of Stock Options Fair Value Assumptions


	Year Ended December 31,
	2025			2024
Weighted-average grant date fair value of PSUs granted	$	28.22		$	22.47
Risk free rate	3.64% to 3.93%			4.09% to 4.39%
Expected volatility	43.9% to 46.5%			43.4% to 44.2%
Expected dividend yield	—		%	—		%


	Year Ended December 31,
	2025			2024			2023
Weighted-average grant date fair value of options granted	$	12.07		$	12.25		$	5.11
Risk free rate	4.07		%	4.36		%	3.99		%
Expected life	6.47			6.53			6.49
Expected volatility	50.04		%	48.25		%	47		%
Expected dividend yield	0.08		%	—		%	—		%

Schedule of Share-Based Payment Arrangement, Performance Shares, Outstanding Activity

The following table summarizes all PSU activity during the year ended December 31, 2025:


	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	56,764	$	22.47	2.22	$	—
Granted	41,724	$	28.22		$	—
Vested	8,160	$	22.48		$	—
Canceled/Forfeited	(12,147)	$	22.48		$	—
Outstanding, December 31, 2025	94,501	$	22.47	2.22	$	—

Schedule of Option Activity

The following table summarizes all option activity during the year ended December 31, 2025:


	Number of Shares Underlying Stock Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding, December 31, 2024	113,751	$	20.44	5.84	$	747
Granted	44,250	$	22.34		$	—
Exercised	(14,833)	$	14.38		$	186
Canceled/Forfeited	(8,833)	$	23.16		$	31
Expired	(23,167)	$	22.90		$	—
Outstanding, December 31, 2025	111,168	$	21.28	7.27	$	1,375
Outstanding, Exercisable, December 31, 2025	45,919	$	20.01	5.00	$	626

Schedule of Stock Options Outstanding

The following table summarizes information about our stock options outstanding as of December 31, 2025:


Range of Exercise Prices	Options Outstanding				Options Exercisable
	Shares	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Shares	Weighted Average Exercise Price
$0.01-$18.00	19,501	6.32	$	10.82	17,835	$	10.92
$18.01-$26.00	75,417	8.84	$	22.50	11,834	$	22.53
$26.01-$30.00	16,250	1.13	$	28.15	16,250	$	28.15
	111,168	7.27	$	21.28	45,919	$	20.01

Schedule of the Status of Unvested Stock Options

The following table summarizes changes in our unvested stock options during the year December 31, 2025:


	Shares	Weighted Average Grant Date Fair Value
Unvested at December 31, 2024	48,998	$	11.35
Granted	44,250	$	12.07
Vested	(20,999)	$	10.61
Canceled/Forfeited	(7,000)	$	12.29
Unvested at December 31, 2025	65,249	$	11.97

Summary of Significant Accounting Policies - Schedule of estimated useful lives (Details)	Dec. 31, 2025
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Minimum \| Rental equipment
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	15 years
Minimum \| Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Minimum \| Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Minimum \| Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Maximum \| Rental equipment
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	25 years
Maximum \| Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	39 years
Maximum \| Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	7 years
Maximum \| Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings From time to time, we are a party to various claims and legal proceedings arising from our operations in the ordinary course of our business. We are not currently a party to any material legal proceedings, and we are not aware of any threatened material litigation. While the outcome of any potential claims and legal proceedings against us cannot be predicted with certainty, we have concluded that it is not considered reasonably possible that a loss resulting from any such claims or proceedings in excess of any amounts accrued has been incurred that is expected to have a material adverse effect on our financial position, results of operations or cash flows. Furthermore, we believe that we maintain adequate insurance coverage against any potential litigation loss relating to insurable risks.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Schedule of Straight Line Method Over the Estimated Useful Lives

Depreciation is computed using the straight-line method over the estimated useful lives of the major asset categories as follows:

Rental equipment

years

Buildings and leasehold improvements

years

Machinery, equipment and furniture

years

Computer hardware and software

years

Vehicles

years

The following table summarizes our rental equipment and accumulated depreciation as of the dates presented:


	December 31,
	2025		2024
Compressor units	$	712,693	$	579,373
Work-in-progress	24,894		51,662
	737,587		631,035
Accumulated depreciation	(239,062)		(216,014)
Rental equipment, net of accumulated depreciation	$	498,525	$	415,021

The following table summarizes our property and non-rental equipment as of the dates presented:


	December 31,
	2025		2024
Land	$	1,562	$	1,680
Building	16,703		19,140
Leasehold improvements	1,026		1,346
Office equipment and furniture	2,099		2,057
Computer hardware and software	619		589
Machinery and equipment	5,068		4,430
Vehicles	15,315		12,739
Work-in-progress	1,137		168
	43,529		42,149
Less accumulated depreciation (1)	(23,010)		(19,160)
Total	$	20,519	$	22,989

(1) Includes $2.6 million recognized as an impairment in 2025 as discussed below.

Assets Held for Sale and Restructuring Activities	12 Months Ended
Assets Held for Sale and Restructuring Activities	Dec. 31, 2025
Discontinued Operations and Disposal Groups [Abstract]
Assets Held for Sale and Restructuring Activities	Assets Held for Sale and Restructuring Activities Midland Facility During the second quarter of 2025, we completed all activities necessary to terminate operations at our facility in Midland, Texas (the “Midland Facility”) and prepared the site, which includes an industrial building and land, for sale. Accordingly, depreciation of the facility was suspended and the combined net carrying value of the building and land, or $2.2 million, was reclassified from property and equipment to an asset held for sale included as a component of current assets on our Consolidated Balance Sheet as of June 30, 2025. We have engaged a broker and are actively marketing the facility. The closure of the Midland Facility was part of our strategy to streamline and outsource our assembly operations and monetize company-owned real estate as disclosed previously. We anticipate that we will complete a sale transaction for the Midland Facility in 2026. Beginning in the first quarter of 2025, all equipment with continuing productive value was transferred from the Midland Facility to certain of our other regional service centers. By the end of April 2025, the Midland Facility was completely vacant in anticipation of the eventual sale. In addition, we disposed of all inventory items, including engines, frames and coolers, among other items that were fully reserved (see Note 4). In connection with the complete closure of the Midland Facility, we terminated eight employees and incurred $0.1 million of severance and termination benefits all of which were paid and settled during April 2025. Other Restructuring Activities During the year ended December 31, 2024, we incurred and paid an amount less than $0.1 million associated with certain restructuring activities at our assembly facilities for which there were no amounts remaining outstanding. During the year ended December 31, 2023, we incurred certain restructuring charges in the form of severance and related compensation benefits in connection with a transition in executive leadership. Accordingly, we incurred $1.2 million in severance and related compensation charges in connection with our former CEO for which there were no amounts remaining outstanding with respect to this action.

Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred income tax assets:
Net operating loss carryforward	$ 28,356	$ 20,600
Research and development credits	1,026	1,011
Stock-based compensation	132	269
Interest expense	285	2,756
Inventory reserves	794	1,293
Deferred compensation	693	827
Other	513	569
Total deferred income tax assets	31,799	27,325
Deferred income tax liabilities:
Property and equipment	(84,329)	(73,198)
Total deferred income tax liabilities	(84,329)	(73,198)
Net deferred income tax liabilities	$ (52,530)	$ (45,873)

Earnings per Share - Schedule of Determination of Diluted Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	89,667	97,262	140,735
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	89,667	83,917	129,751
Restricted Stock/Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	0	13,345	10,984

Rental Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 2.5	$ 4.7	$ 5.5
Retirement of rental equipment (less than)	0.7	0.1	0.5
Rental equipment
Property, Plant and Equipment [Line Items]
Depreciation	$ 32.7	$ 28.2	$ 24.0

Deferred Compensation Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Compensation Related Costs [Abstract]
Participant's maximum compensation deferral percentage	90.00%
Company owned life insurance	$ 2,900	$ 3,000
Gain (loss) on company owned life insurance	63	156	$ (235)
Deferred compensation obligation	$ 3,200	$ 3,800
Deferred restricted stock shares (in shares)	0	0
Deferred compensation arrangement with individual, shares issued (in shares)	140,115	191,700
Deferred compensation arrangement, fair value of shares issued	$ 4,700	$ 4,800

Property and Equipment - Schedule of Property and Non-Rental Equipment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 43,529	$ 43,529	$ 42,149
Less accumulated depreciation (1)	(23,010)	(23,010)	(19,160)
Total	20,519	20,519	22,989
Impairments	2,600	2,600	841	$ 779
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,562	1,562	1,680
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,703	16,703	19,140
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,026	1,026	1,346
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,099	2,099	2,057
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	619	619	589
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,068	5,068	4,430
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,315	15,315	12,739
Work-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,137	$ 1,137	$ 168

Property and Equipment - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2025
Property, Plant and Equipment [Line Items]
Impairments	$ 2,600	$ 2,600	$ 841	$ 779
Assets held for sale	2,227	2,227	0
Property, Plant, and Equipment, Excluding Rental Equipment
Property, Plant and Equipment [Line Items]
Depreciation		3,900	$ 2,400	$ 2,400
Land and Building
Property, Plant and Equipment [Line Items]
Assets held for sale	$ 2,200	$ 2,200			$ 2,200

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2025
Auditor Information [Abstract]
Auditor Name	Ham, Langston & Brezina, LLP
Auditor Location	Houston, Texas
Auditor Firm ID	298

Leases - Schedule of Cash Flow Impact (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 1,010	$ 712	$ 485
Finance lease cost (3)	0	622	95
Short-term lease cost	600	100	300
Operating lease, cost	$ 400	$ 600	$ 200

Stockholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2025
Equity [Abstract]
Dividends Declared per Share	$ 0.11	$ 0.10
Dividends Paid	$ 1,383	$ 1,254	$ 2,665

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Stockholders’ Equity:
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	13,882,860	13,761,664
Treasury shares (in shares)	1,310,000	1,310,000

Leases

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Leases

Our operating leases are primarily related to property leases for administrative and field offices, storage facilities, temporary housing and office equipment. Our operating leases have remaining lease terms of one to seven years. Renewal and termination options are included in the lease term when it is reasonably certain that we will exercise the option. Our finance leases were primarily related to vehicles used in our rental business; however, we terminated all such leases during 2024 and purchased the vehicles and recorded them in property and equipment. Prior to their termination, our finance leases generally had lease terms of three years. Our lease agreements do not contain any contingent rental payments, material residual guarantees or material restrictive covenants.

The following table reflects the amounts related to leases that are recorded on our Consolidated Balance Sheets as of the dates presented:


	Classification on Consolidated	December 31,
Description	Balance Sheets	2025			2024
Operating lease assets	Other assets	$	2,373		$	607

Current operating lease liabilities	Accrued liabilities	$	462		$	153
Noncurrent operating lease liabilities	Other long-term liabilities	1,911			454
Total lease liabilities		$	2,373		$	607

Weighted average remaining lease term (in years)		4.9			3.8
Weighted average discount rate		7.4		%	8.3		%

Operating lease costs are recognized on a straight-line basis over the lease term. Total operating lease costs for the years ended December 31, 2025, 2024 and 2023 were approximately $1.0 million, $0.7 million and $0.5 million, respectively.

The following table summarizes the cash paid for amounts included in the measurement of liabilities included in our Consolidated Statements of Cash Flows for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Operating lease cost (1) (2)	$	1,010	$	712	$	485
Finance lease cost (3)	$	—	$	622	$	95

(1) Lease costs are classified in the Consolidated Statements of Operations within cost of revenues and selling, general and administrative expenses.

(3) All finance leases were terminated during 2024.

The following summarizes the future maturities of our lease liabilities for the periods presented:


Year Ending December 31,
2026	$	594
2027	573
2028	554
2029	455
2030	361
Thereafter	323
Total lease payments	2,860
Less: Imputed interest	(487)
Total	$	2,373

Rent expense under such leases was $0.4 million, $0.6 million and $0.2 million for the years ended December 31, 2025, 2024 and 2023, respectively.

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Restricted Stock Units, Cash-Settled RSUs and Performance Share Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Restricted Stock
Number of Shares
Outstanding, beginning of period (in shares)	131,183
Granted (in shares)	75,031
Vested (in shares)	(85,699)
Canceled/Forfeited (in shares)	(15,050)
Outstanding, Ending of period (in shares)	105,465	131,183
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)	$ 16.39
Granted (in dollars per share)	22.78
Vested (in dollars per share)	15.96
Canceled/Forfeited (in dollars per share)	19.65
Outstanding, end of period (in dollars per share)	$ 20.82	$ 16.39
Weighted Average Remaining Contractual Life (years)
Weighted average remaining contractual life (years)	3 years 8 months 12 days	5 years 1 month 24 days
Aggregate Intrinsic Value
Outstanding, beginning of period aggregate intrinsic value	$ 3,516
Granted, aggregate intrinsic value	1,709
Vested, aggregate intrinsic value	2,150
Cancelled/Forfeited, aggregate intrinsic value	411
Outstanding, ending of period aggregate intrinsic value	$ 3,516	$ 3,516
Restricted Stock \| Cash-Settled RSUs
Number of Shares
Outstanding, beginning of period (in shares)	15,069
Granted (in shares)	13,812
Vested (in shares)	(12,259)
Canceled/Forfeited (in shares)	(2,810)
Outstanding, Ending of period (in shares)	13,812	15,069
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)	$ 19.51
Granted (in dollars per share)	24.60
Vested (in dollars per share)	19.50
Canceled/Forfeited (in dollars per share)	19.57
Outstanding, end of period (in dollars per share)	$ 24.60	$ 19.51
Weighted Average Remaining Contractual Life (years)
Weighted average remaining contractual life (years)	5 months 1 day	6 months
Aggregate Intrinsic Value
Outstanding, beginning of period aggregate intrinsic value	$ 294
Granted, aggregate intrinsic value	340
Vested, aggregate intrinsic value	240
Cancelled/Forfeited, aggregate intrinsic value	55
Outstanding, ending of period aggregate intrinsic value	$ 380	$ 294
Performance Shares
Number of Shares
Outstanding, beginning of period (in shares)	56,764
Granted (in shares)	41,724
Vested (in shares)	(8,160)
Canceled/Forfeited (in shares)	(12,147)
Outstanding, Ending of period (in shares)	94,501	56,764
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)	$ 22.47
Granted (in dollars per share)	28.22
Vested (in dollars per share)	22.48
Canceled/Forfeited (in dollars per share)	22.48
Outstanding, end of period (in dollars per share)	$ 22.47	$ 22.47
Weighted Average Remaining Contractual Life (years)
Weighted average remaining contractual life (years)	2 years 2 months 19 days	2 years 2 months 19 days
Aggregate Intrinsic Value
Outstanding, beginning of period aggregate intrinsic value	$ 0
Granted, aggregate intrinsic value	0
Vested, aggregate intrinsic value	0
Cancelled/Forfeited, aggregate intrinsic value	0
Outstanding, ending of period aggregate intrinsic value	$ 0	$ 0

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Other Long-Term Incentive Compensation Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 2,566	$ 2,069	$ 2,054
Other Long-Term Incentive Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense			$ 400

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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Reference 30: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Rental Equipment

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Rental Equipment

The following table summarizes our rental equipment and accumulated depreciation as of the dates presented:


	December 31,
	2025		2024
Compressor units	$	712,693	$	579,373
Work-in-progress	24,894		51,662
	737,587		631,035
Accumulated depreciation	(239,062)		(216,014)
Rental equipment, net of accumulated depreciation	$	498,525	$	415,021

We evaluated our rental equipment for potential impairment as of December 31, 2025 and 2024 and determined that none were present. We capitalized interest totaling approximately $2.5 million, $4.7 million and $5.5 million in connection with the acquisition and assembly of compressor units for the years ended December 31, 2025 and 2024 and 2023, respectively. Depreciation expense for rental equipment was $32.7 million, $28.2 million and $24.0 million for the years ended December 31, 2025, 2024 and 2023, respectively.

Retirement of Rental Equipment

We routinely review our rental fleet for retirement or obsolescence as well as an assessment to determine which units are not of the type, configuration, make or model that our customers are demanding or that are not cost efficient to refurbish, maintain and/or operate. As a result of these reviews, we recorded charges for the retirement of rental equipment of $0.7 million, less than $0.1 million and $0.5 million during the years ended December 31, 2025, 2024 and 2023, respectively.

Rental Activity

Future minimum rent payments for the periods presented due as of December 31, 2025 from our customers for contractual arrangements, not on a month-to-month basis, were as follows:


Year Ending December 31,
2026	$	130,082
2027	98,189
2028	66,835
2029	39,213
2030	17,519

Total	$	351,838

Revenues from Customers

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Revenues from Customers

Disaggregation of Revenue

The following table summarizes our revenue disaggregated by product or service type for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Rental	$	164,326	$	144,236	$	106,159
Sales
Parts	2,120		5,106		6,311
Other (Compressors/Rebuilds)	1,872		2,507		2,610
	3,992		7,613		8,921
Aftermarket services	3,997		4,893		6,087
Total revenue	$	172,315	$	156,742	$	121,167

For the periods ended December 31, 2024 and 2023, we recognized revenue of less than $0.4 million and $0.1 million from amounts related to sales that were included in deferred revenue at the beginning of 2024 and 2023, respectively.

Transaction Price Allocated to the Remaining Performance Obligations

As of December 31, 2025 and 2024, we had no unsatisfied performance obligations.

Contract Costs

We recognize the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that we otherwise would have recognized is one year or less. These costs are included within Selling, general and administrative expense in our Consolidated Statements of Operations.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (a)
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
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-URI https://asc.fasb.org/606/tableOfContent

+ Details

Long-term Debt - Schedule of Outstanding Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Disclosure [Abstract]
Credit facility	$ 230,000	$ 170,000

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of Outstanding Long-Term Debt

Our outstanding long-term debt consists of the following as of the dates presented:


	December 31,
	2025		2024
Credit facility	$	230,000	$	170,000

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
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-Name Accounting Standards Codification
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-Section 50
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-7

+ Details

Rental Equipment (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Schedule of Rental Equipment

Depreciation is computed using the straight-line method over the estimated useful lives of the major asset categories as follows:

Rental equipment

years

Buildings and leasehold improvements

years

Machinery, equipment and furniture

years

Computer hardware and software

years

Vehicles

years

The following table summarizes our rental equipment and accumulated depreciation as of the dates presented:


	December 31,
	2025		2024
Compressor units	$	712,693	$	579,373
Work-in-progress	24,894		51,662
	737,587		631,035
Accumulated depreciation	(239,062)		(216,014)
Rental equipment, net of accumulated depreciation	$	498,525	$	415,021

The following table summarizes our property and non-rental equipment as of the dates presented:


	December 31,
	2025		2024
Land	$	1,562	$	1,680
Building	16,703		19,140
Leasehold improvements	1,026		1,346
Office equipment and furniture	2,099		2,057
Computer hardware and software	619		589
Machinery and equipment	5,068		4,430
Vehicles	15,315		12,739
Work-in-progress	1,137		168
	43,529		42,149
Less accumulated depreciation (1)	(23,010)		(19,160)
Total	$	20,519	$	22,989

(1) Includes $2.6 million recognized as an impairment in 2025 as discussed below.

Schedule of Future Minimum Rent Payments Receivable

Future minimum rent payments for the periods presented due as of December 31, 2025 from our customers for contractual arrangements, not on a month-to-month basis, were as follows:


Year Ending December 31,
2026	$	130,082
2027	98,189
2028	66,835
2029	39,213
2030	17,519

Total	$	351,838

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Valuation Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value of options granted (in dollars per share)	$ 12.07
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value of options granted (in dollars per share)	$ 28.22	$ 22.47
Risk free rate, minimum	3.64%	4.09%
Risk free rate, maximum	3.93%	4.39%
Expected volatility, minimum	43.90%	43.40%
Expected volatility, maximum	46.50%	44.20%
Expected dividend yield	0.00%	0.00%
Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value of options granted (in dollars per share)	$ 12.07	$ 12.25	$ 5.11
Risk free rate	4.07%	4.36%	3.99%
Expected life	6 years 5 months 19 days	6 years 6 months 10 days	6 years 5 months 26 days
Expected volatility	50.04%	48.25%	47.00%
Expected dividend yield	0.08%	0.00%	0.00%

Supplemental Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued purchases	$ 4,960	$ 2,085
Compensation	3,121	3,483
Current operating leases	462	153
Interest	273	269
Sales taxes	421	355
Professional fees	426	393
Other	799	950
Total	$ 10,462	$ 7,688

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Revenues (less than)	$ 172,315	$ 156,742	$ 121,167
Accounts receivable	18,497	15,626
Payments to related parties	$ (10,767)	$ (11,659)	$ (3,837)
N-G, LLC
Related Party Transaction [Line Items]
Percent ownership	14.00%	14.00%	14.00%
Corporate Joint Venture
Related Party Transaction [Line Items]
Revenues (less than)	$ 100	$ 700	$ 900
Accounts receivable	$ 100	100
Shareholder
Related Party Transaction [Line Items]
Payments to related parties		$ 100	$ 300

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Inventory

12 Months Ended

Dec. 31, 2025

Inventory Disclosure [Abstract]

Inventory

The following table summarizes the components of our inventory, net of allowances for obsolescence as of the dates presented:


	December 31,
	2025		2024
Parts and supplies, net of allowance of $2,552 and $4,379, respectively	$	20,104	$	17,706
Work-in-process	543		345

Inventory - current	20,647		18,051
Parts and supplies - long term, net of allowance of $1,020 and $1,488, respectively	—		—
Total inventory	$	20,647	$	18,051

Our long-term inventory, which is fully reserved as of December 31, 2025 and 2024, consists of excess raw materials that remain viable but with limited market opportunities.

Allowance for Obsolescence

The following table summarizes the changes in our allowance for obsolescence for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Beginning balance	$	5,867	$	4,004	$	120
Allowance for obsolescence	1,114		1,863		3,965
Write-offs	(3,409)		—		(81)
Ending balance	$	3,572	$	5,867	$	4,004

The allowance for 2023 was primarily related to our decision to cease future compressor assembly at our Midland, Texas facility, which reduced the expected future demand of certain inventory items that were held at this facility. In 2024 and 2025, we continued actions in support of our strategy to further outsource assembly activities to third parties limiting our ability to market certain assembled parts resulting in an additional allowance charges.

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 19,928	$ 17,227	$ 4,747
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	36,656	31,347	26,550
Impairments	2,600	841	779
Inventory allowance	1,114	1,863	3,965
Retirement of rental equipment	728	28	505
Gain on the disposition of assets, net	(270)	(430)	(481)
Amortization of debt issuance costs	1,168	746	425
Deferred income taxes	6,657	4,237	1,838
Stock-based compensation	2,126	1,821	2,054
Provision for credit losses	155	433	492
(Gain) loss on company owned life insurance	(63)	(156)	235
Changes in operating assets and liabilities:
Trade accounts receivables	(3,026)	23,127	(25,010)
Inventory	(3,710)	2,477	(669)
Prepaid expenses, income taxes receivable and prepayments	(3,395)	152	(7)
Accounts payable and accrued liabilities	5,554	(17,727)	2,436
Other	(3,295)	477	174
NET CASH PROVIDED BY OPERATING ACTIVITIES	62,927	66,463	18,033
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of rental equipment, property and other equipment	(121,487)	(71,894)	(153,943)
Purchase of company owned life insurance, net	0	(22)	(422)
Proceeds received from insurance for damages to equipment	96	0	0
Proceeds from disposition of assets, net	94	476	477
NET CASH USED IN INVESTING ACTIVITIES	(121,297)	(71,440)	(153,888)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from credit facility borrowings	71,122	28,000	139,000
Repayments of credit facility borrowings	(11,122)	(22,000)	0
Payments of other long term liabilities	0	(780)	(95)
Payments of debt issuance costs	(1,297)	(962)	(2,693)
Proceeds from exercise of stock options	168	293	0
Payment of dividends	(2,637)	0	0
Taxes paid related to net share settlement of equity awards	(6)	(178)	(983)
NET CASH PROVIDED BY FINANCING ACTIVITIES	56,228	4,373	135,229
NET CHANGE IN CASH AND CASH EQUIVALENTS	(2,142)	(604)	(626)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	2,142	2,746	3,372
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	2,142	2,746
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	14,793	18,394	7,053
Income taxes paid, net of refunds received	259	0	0
SUPPLEMENTAL DISCLOSURES OF NON-CASH TRANSACTIONS:
Transfer of rental equipment to inventory	0	51	665
Transfer of right of use assets to property and equipment	0	2,641	0
Transfer of property and equipment to assets held for sale	2,227	0	0
Accrued purchases of property and equipment	1,975	2,687	0
Right of use assets acquired through a finance lease	0	2,174	1,146
Right of use assets acquired through an operating lease	$ 1,989	$ 563	$ 63

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2022		0
Beginning balance at Dec. 31, 2022	$ 230,076	$ 0	$ 135	$ 115,411	$ 129,534	$ (15,004)
Beginning balance (in shares) at Dec. 31, 2022			13,519,000
Beginning balance (in shares) at Dec. 31, 2022						1,310,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2,054		$ 2	2,052
Vesting of restricted stock/units and performance share units (in shares)			169,000
Vesting of restricted stock/units and performance share units	0
Taxes paid related to net shares settlement of equity awards	(983)			(983)
Net income	4,747				4,747
Ending balance (in shares) at Dec. 31, 2023		0
Ending balance at Dec. 31, 2023	235,894	$ 0	$ 137	116,480	134,281	$ (15,004)
Ending balance (in shares) at Dec. 31, 2023			13,688,000
Ending balance (in shares) at Dec. 31, 2023						1,310,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,821			1,821
Vesting of restricted stock/units and performance share units (in shares)			51,000
Vesting of restricted stock/units and performance share units	0		$ 1	(1)
Exercise of common stock options (in shares)			23,000
Exercise of common stock options	293		$ 0	293
Taxes paid related to net shares settlement of equity awards	(178)			(178)
Net income	$ 17,227				17,227
Ending balance (in shares) at Dec. 31, 2024	0	0
Ending balance at Dec. 31, 2024	$ 255,057	$ 0	$ 138	118,415	151,508	$ (15,004)
Ending balance (in shares) at Dec. 31, 2024	13,761,664		13,762,000
Ending balance (in shares) at Dec. 31, 2024	1,310,000					1,310,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 2,126			2,126
Vesting of restricted stock/units and performance share units (in shares)			107,000
Vesting of restricted stock/units and performance share units	108		$ 0	108
Exercise of common stock options (in shares)			14,000
Exercise of common stock options	168			168
Taxes paid related to net shares settlement of equity awards	(6)			(6)
Dividends declared	(2,665)				(2,665)
Net income	$ 19,928				19,928
Ending balance (in shares) at Dec. 31, 2025	0	0
Ending balance at Dec. 31, 2025	$ 274,716	$ 0	$ 138	$ 120,811	$ 168,771	$ (15,004)
Ending balance (in shares) at Dec. 31, 2025	13,882,860		13,883,000
Ending balance (in shares) at Dec. 31, 2025	1,310,000					1,310,000

Stock-Based and Other Long-Term Incentive Compensation - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) plan shares	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity plans maintained \| plan	2
Stock based compensation expense	$ 2,566	$ 2,069	$ 2,054
Unrecognized compensation cost related to stock options	$ 400
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares	1,650,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 1,200	1,300	2,000
Total unrecognized compensation expense	$ 1,400
Expenses recognized (in years)	2 years 1 month 6 days
Restricted Stock \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares) \| shares	646,751
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 600	300
Total unrecognized compensation expense	$ 1,100
Expenses recognized (in years)	1 year 7 months 6 days
Peer group percentile	31.25%
Performance Shares \| Chief Executive Officer, Chief Operating Officer And Chief Financial Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Performance Shares \| Chief Executive Officer And Chief Operating Officer \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Performance Shares \| Chief Executive Officer And Chief Operating Officer \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 300	$ 200	$ 100
Stock Options \| Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Award expiration period	10 years
Stock Options \| Stock Option Plan \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares	1,000,000
Number of shares available for grant (in shares) \| shares	395,169

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 0	$ 2,142
Trade accounts receivable, net of provision for credit losses	18,497	15,626
Inventory, net of allowance for obsolescence	20,647	18,051
Income taxes receivable and prepayments	14,056	11,282
Prepaid expenses and other	1,696	1,075
Assets held for sale	2,227	0
Total current assets	57,123	48,176
Long-term inventory, net of allowance for obsolescence	0	0
Rental equipment, net of accumulated depreciation	498,525	415,021
Property and equipment, net of accumulated depreciation	20,519	22,989
Other assets	10,619	6,342
Total assets	586,786	492,528
Current Liabilities:
Accounts payable	14,048	9,670
Accrued liabilities	10,462	7,688
Total current liabilities	24,510	17,358
Long-term debt	230,000	170,000
Deferred income taxes	52,530	45,873
Other long-term liabilities	5,030	4,240
Total liabilities	312,070	237,471
Commitments and contingencies (Note 13)
Stockholders’ Equity:
Preferred stock, 5,000 shares authorized, no shares issued or outstanding	0	0
Common stock, 30,000 shares authorized, par value $0.01; 13,883 and 13,762 shares issued, as of December 31, 2025 and 2024, respectively	138	138
Additional paid-in capital	120,811	118,415
Retained earnings	168,771	151,508
Treasury stock, at cost, 1,310 shares for each of December 31, 2025 and 2024, respectively	(15,004)	(15,004)
Total stockholders’ equity	274,716	255,057
Total liabilities and stockholders’ equity	$ 586,786	$ 492,528

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2025
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 9, 2026, we announced that our Board of Directors declared a cash dividend of $0.11 per share to stockholders of record as of February 18, 2026. The dividend was paid on March 4, 2026 for a total of $1.4 million. On February 10, 2026, we entered into an exclusive listing agreement to sell the Former Headquarters Property. The proposed sale of the Former Headquarters Property as well as our ongoing effort to sell our former fabrication facility in Midland (see N o te 5) are part of our broader efforts to monetize certain noncash assets. We anticipate a closing of the Former Headquarters Property in the second half of 2026. We have evaluated all events subsequent to the balance sheet date as of December 31, 2025 and through the date this report was issued and determined that there have been no other events that would require adjustments or additional disclosures to our Consolidated Financial Statements.

Income Taxes

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Income Taxes

The following table summarizes our provision for income taxes for the presented:


	Year Ended December 31,
	2025		2024		2023
Current income tax benefit (expense):
Federal	$	156	$	(88)	$	—
State	(102)		(114)		(35)
Total current income tax benefit (expense)	54		(202)		(35)
Deferred income tax (expense) benefit:
Federal	(5,703)		(4,456)		(1,940)
State	(954)		219		102
Total deferred income tax expense	(6,657)		(4,237)		(1,838)
Provision for income taxes	$	(6,603)	$	(4,439)	$	(1,873)

The following table summarizes the effective tax rates for the periods presented:


	Year Ended December 31,
	2025				2024				2023
Statutory rate	$	(5,571)	21.0	%	$	(4,550)	21.0	%	$	(1,390)	21.0	%
State and local taxes	(1,035)		3.9	%	130		(0.6)	%	86		(1.3)	%
Stock-based compensation	—		—	%	195		(0.9)	%	(46)		0.7	%
Nondeductible compensation	(251)		0.9	%	(65)		0.3	%	(543)		8.2	%
Other	254		(1.0)	%	(149)		0.7	%	20		(0.3)	%
Effective rate	$	(6,603)	24.8	%	$	(4,439)	20.5	%	$	(1,873)	28.3	%

The following table summarizes the income tax effects of temporary differences that give rise to significant portions of deferred income tax assets and (liabilities) as of the dates presented:


	December 31,
	2025		2024
Deferred income tax assets:
Net operating loss carryforward	$	28,356	$	20,600
Research and development credits	1,026		1,011
Stock-based compensation	132		269
Interest expense	285		2,756
Inventory reserves	794		1,293
Deferred compensation	693		827
Other	513		569
Total deferred income tax assets	31,799		27,325
Deferred income tax liabilities:
Property and equipment	(84,329)		(73,198)
Total deferred income tax liabilities	(84,329)		(73,198)
Net deferred income tax liabilities	$	(52,530)	$	(45,873)

We file income tax returns in the U.S. federal jurisdiction and various state jurisdictions. With few exceptions, we are no longer subject to U.S. federal or state income tax examination by tax authorities for years before 2020.

Income Taxes Receivable

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was enacted in response to the economic impact caused by the COVID-19 pandemic. The CARES Act, among other things, permits federal income tax net operating loss (“NOL”) carryovers and carrybacks to offset 100% of taxable income for taxable years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019, and 2020 to be carried back to each of the five preceding taxable years to generate a refund of previously paid federal income taxes. We generated significant NOLs during 2018 and 2019 and filed carryback claims for these losses to the preceding five years.

In connection with the filing of these claims, we initially recorded a federal income tax receivable of approximately $15.0 million and certain related adjustments to our deferred tax liability. We subsequently received federal income tax refunds corresponding to the 2018 NOL carryback during 2020 leaving approximately $11.5 million remaining to be refunded in connection with the 2019 NOL carryback. In conjunction with the remaining income tax refund claim, we received a notice from the Internal Revenue Service (“IRS”) on March 8, 2023, stating that our income tax returns for 2015, 2016, 2017 and 2019 were selected for examination. Furthermore, and as is customary for income tax refunds of this magnitude, the IRS was required to review the refund claim and provide a report to the Joint Committee on Taxation of the U.S. Congress (“JCT”). As a result of the submission of the refund claim to the JCT, the IRS completed their review of the income tax returns for 2015, 2016 and 2017. Our request for refund was reviewed and concluded favorably with the JCT concurring with the IRS’s conclusions. Subsequent to a delay due to the federal government shutdown in October 2025, we received a total of $12.3 million in the first quarter of 2026. This amount includes tax refunds of $10.2 million and related interest of $2.1 million for the years 2015, 2016 and 2017. After receipt of these refunds, a total of $1.8 million attributable solely to 2019 remains open including an income tax refund of $1.5 million plus interest of $0.3 million.

Other Income Tax Attributes

As of December 31, 2025, we had NOL carryforwards for federal income tax purposes of $124.2 million, which may be carried forward indefinitely and can offset up to 80% of future taxable income in any given year. Future changes in ownership, as defined by Section 382 of the Internal Revenue Code of 1986, as amended (“IRC”), could limit the amount of NOL carryforwards used in any one year. In general, under Section 382 and 383 of the IRC, a corporation that undergoes an “ownership change” is subject to limitations on its ability to utilize its pre-change NOLs and certain tax credits, to offset future taxable income and tax. In general, an ownership change occurs if the aggregate stock ownership of certain stockholders changes by more than 50 percentage points over such stockholders’ lowest percentage of ownership during the testing period (generally three years). We also had state NOL carryforwards of $58.5 million with carryforward periods similar to those of our federal NOLs.

We paid a total of $0.3 million during 2025for income taxes, net of refunds received, including $0.1 million to the IRS and $0.1 million to the State of Texas. We have no reserves for uncertain tax positions as of December 31, 2025 and 2024.

- Definition

The entire disclosure for income tax.

+ References

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+ Details

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Stephen C. Taylor [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	Stephen C. Taylor, a member of the Board of Directors, adopted a Rule 10b5-1 trading agreement that is intended to satisfy the affirmative defense of Rule 10b5-1(c) for the sale of up to an aggregate of 100,000 shares of the Company’s common stock, subject to various volume amounts and price thresholds. The 10b5-1 Plan was entered into during an open insider trading window in December 2025 and sales commenced under the plan after completion of the required cooling off period under Rule 10b5-1.The plan became effective on March 5, 2026 and the aggregate sales were completed by March 6, 2026.
Name	Stephen C. Taylor
Title	member of the Board of Directors
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	12/1/2025
Expiration Date	March 6, 2026
Arrangement Duration	1 day
Aggregate Available	100,000

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue:
Rental	$ 164,326	$ 144,236	$ 106,159
Total revenue	172,315	156,742	121,167
Cost of revenues (excluding depreciation and amortization):
Rental	64,732	56,903	48,877
Sales	4,233	7,903	8,919
Aftermarket services	2,813	3,950	4,658
Total cost of revenues (excluding depreciation and amortization)	71,778	68,756	62,454
Selling, general and administrative expenses	22,411	21,012	16,938
Depreciation and amortization	36,656	31,347	26,550
Impairments	2,600	841	779
Inventory allowance	1,114	1,863	3,965
Retirement of rental equipment	728	28	505
Gain on disposition of assets, net	(270)	(430)	(481)
Total operating costs and expenses	135,017	123,417	110,710
Operating income	37,298	33,325	10,457
Other income (expense):
Interest expense	(13,565)	(11,927)	(4,082)
Interest income	2,444	0	0
Other income (expense), net	354	268	245
Total other expense, net	(10,767)	(11,659)	(3,837)
Income before income taxes	26,531	21,666	6,620
Provision for income taxes	(6,603)	(4,439)	(1,873)
Net income	$ 19,928	$ 17,227	$ 4,747
Earnings per share:
Basic (in dollars per share)	$ 1.59	$ 1.39	$ 0.39
Diluted (in dollars per share)	$ 1.57	$ 1.37	$ 0.38
Weighted average shares outstanding:
Basic (in shares)	12,538	12,412	12,316
Diluted (in shares)	12,695	12,554	12,383
Sales
Revenue:
Total revenue from contracts with customers	$ 3,992	$ 7,613	$ 8,921
Aftermarket services
Revenue:
Total revenue from contracts with customers	$ 3,997	$ 4,893	$ 6,087

Stock-Based and Other Long-Term Incentive Compensation - Schedule of Stock Options by Exercise Price Range (Details)	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, shares (in shares) \| shares	111,168
Options outstanding, weighted average remaining contractual life (years)	7 years 3 months 7 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 21.28
Options exercisable, shares (in shares) \| shares	45,919
Options exercisable, weighted average exercise price (in dollars per share)	$ 20.01
$0.01-$18.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit (in dollars per share)	0.01
Range of exercise prices, upper limit (in dollars per share)	$ 18
Options outstanding, shares (in shares) \| shares	19,501
Options outstanding, weighted average remaining contractual life (years)	6 years 3 months 25 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 10.82
Options exercisable, shares (in shares) \| shares	17,835
Options exercisable, weighted average exercise price (in dollars per share)	$ 10.92
$18.01-$26.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit (in dollars per share)	18.01
Range of exercise prices, upper limit (in dollars per share)	$ 26
Options outstanding, shares (in shares) \| shares	75,417
Options outstanding, weighted average remaining contractual life (years)	8 years 10 months 2 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 22.50
Options exercisable, shares (in shares) \| shares	11,834
Options exercisable, weighted average exercise price (in dollars per share)	$ 22.53
$26.01-$30.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit (in dollars per share)	26.01
Range of exercise prices, upper limit (in dollars per share)	$ 30
Options outstanding, shares (in shares) \| shares	16,250
Options outstanding, weighted average remaining contractual life (years)	1 year 1 month 17 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 28.15
Options exercisable, shares (in shares) \| shares	16,250
Options exercisable, weighted average exercise price (in dollars per share)	$ 28.15

Inventory (Tables)

12 Months Ended

Dec. 31, 2025

Inventory Disclosure [Abstract]

Schedule of Inventory

The following table summarizes the components of our inventory, net of allowances for obsolescence as of the dates presented:


	December 31,
	2025		2024
Parts and supplies, net of allowance of $2,552 and $4,379, respectively	$	20,104	$	17,706
Work-in-process	543		345

Inventory - current	20,647		18,051
Parts and supplies - long term, net of allowance of $1,020 and $1,488, respectively	—		—
Total inventory	$	20,647	$	18,051

The following table summarizes the changes in our allowance for obsolescence for the periods presented:


	Year Ended December 31,
	2025		2024		2023
Beginning balance	$	5,867	$	4,004	$	120
Allowance for obsolescence	1,114		1,863		3,965
Write-offs	(3,409)		—		(81)
Ending balance	$	3,572	$	5,867	$	4,004

Revenues from Customers - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Revenue from Contract with Customer [Abstract]
Revenue recognized (less than)	$ 0.4	$ 0.1
Amortization period of capitalized contract costs			1 year

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Finance lease, remaining lease term	3 years
Operating lease cost	$ 1,010	$ 712	$ 485
Operating lease, cost	$ 400	$ 600	$ 200
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	7 years

Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2025	Aug. 08, 2025	Dec. 31, 2024
Equity [Abstract]
Preferred stock, shares authorized (in shares)	5,000,000		5,000,000
Preferred stock, shares issued (in shares)	0		0
Preferred stock, shares outstanding (in shares)	0		0
Common stock, shares authorized (in shares)	30,000,000		30,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares issued (in shares)	13,882,860		13,761,664
Common stock, shares outstanding (in shares)	12,573,014		12,451,818
Authorized amount		$ 6

Stockholders' Equity

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Preferred Stock

As of December 31, 2025 and 2024, we had a total of 5,000,000 authorized preferred shares which may be issued in series with rights and preferences as designated by our Board of Directors. As of December 31, 2025 and 2024, there were no issued or outstanding preferred shares.

Common Stock

As of December 31, 2025 and 2024, we had a total of 30,000,000 authorized shares of common stock, par value $0.01 per share. As of December 31, 2025 and 2024, there were 13,882,860 and 13,761,664 shares issued and 12,573,014 and 12,451,818 shares outstanding, respectively.

Additional Paid-In Capital

Additional paid-in capital includes the cumulative amounts received in excess of the par value with respect to the public offerings of our common stock and the issuance of shares in connection with our stock-based compensation plans. Furthermore, additional paid-in capital is increased by the periodic cost of equity-classified stock-based compensation awards, net of any forfeitures and the cost of shares used to settle income tax obligations upon vesting.

Retained Earnings, Dividends and Comprehensive Income

Cash dividends are considered restricted payments as defined in the Credit Facility and may be made provided that certain conditions are satisfied as reflected in the Credit Facility, including the absence of any defaults, among others.

The following table summarizes our dividends declared and paid in cash for the periods presented:


Quarterly Period Ended	Dividends Declared per Share		Dividends Paid
December 31, 2025	$	0.11	$	1,383
September 30, 2025	$	0.10	$	1,254

Our comprehensive income is comprised only of our net income as there are no components that would be considered as other comprehensive income.

Treasury Stock and Share Repurchases

On August 8, 2025, our Board of Directors approved a share repurchase program (the “Repurchase Plan”). The Repurchase Plan provides for the repurchase of shares of our common stock from time to time in the open market as conditions, cash reserves, cash flows and the evaluation of uses of cash for operations, growth and share repurchase may allow. The Repurchase Plan is limited to $6 million and expires on August 6, 2027. There were no share repurchases during 2025.

- Definition

The entire disclosure for equity.

+ References

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+ Details