10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2022

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from         to        

Commission File No. 001-33666

Archrock, Inc.

(Exact name of registrant as specified in its charter)

Delaware	74-3204509
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

9807 Katy Freeway, Suite 100, Houston, Texas 77024

(Address of principal executive offices, zip code)

(281) 836-8000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of exchange on which registered
Common stock, $0.01 par value per share	AROC	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

Number of shares of the common stock of the registrant outstanding as of July 27, 2022: 155,624,577 shares.

TABLE OF CONTENTS

	Page
Glossary	3
Forward-Looking Statements	4
Part I. Financial Information
Item 1. Financial Statements (unaudited)	5
Condensed Consolidated Balance Sheets	5
Condensed Consolidated Statements of Operations	6
Condensed Consolidated Statements of Comprehensive Income	7
Condensed Consolidated Statements of Equity	8
Condensed Consolidated Statements of Cash Flows	10
Notes to Condensed Consolidated Financial Statements	11
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3. Quantitative and Qualitative Disclosures About Market Risk	33
Item 4. Controls and Procedures	33
Part II. Other Information
Item 1. Legal Proceedings	35
Item 1A. Risk Factors	35
Item 2. Purchases of Equity Securities by Issuer and Affiliated Purchasers	35
Item 3. Defaults Upon Senior Securities	35
Item 4. Mine Safety Disclosures	35
Item 5. Other Information	35
Item 6. Exhibits	36
Signatures	37

2

GLOSSARY

The following terms and abbreviations appearing in the text of this report have the meanings indicated below.

2021 Form 10-K	Annual Report on Form 10-K for the year ended December 31, 2021
2027 Notes	$500.0 million of 6.875% senior notes due April 2027, issued in March 2019
2028 Notes	$800.0 million of 6.25% senior notes due April 2028, $500.0 million of which was issued in December 2019, $300.0 million of which was issued in December 2020
Archrock, our, we, us	Archrock, Inc., individually and together with its wholly-owned subsidiaries
ATM Agreement	Equity Distribution Agreement, dated February 23, 2021, entered into with Wells Fargo Securities, LLC and BofA Securities, Inc., as sales agents, relating to the at-the-market offer and sale of shares of our common stock from time to time
Credit Facility	$750.0 million asset-based revolving credit facility due November 2024, as governed by Amendment No. 3 to Credit Agreement, dated February 22, 2021, which amended that Credit Agreement, dated as of March 30, 2017
ECOTEC	Ecotec International Holdings, LLC
ERP	Enterprise Resource Planning
ESPP	Employee Stock Purchase Plan
Exchange Act	Securities Exchange Act of 1934, as amended
February 2021 Disposition	Sale completed in February 2021 of certain contract operations customer service agreements, compressors and other assets
Financial Statements	Condensed consolidated financial statements included in Part I Item 1 of this Quarterly Report on Form 10-Q
GAAP	U.S. generally accepted accounting principles
Hilcorp	Hilcorp Energy Company
LIBOR	London Interbank Offered Rate
May 2022 Disposition	Sale completed in May 2022 of certain contract operations customer service agreements, compressors and other assets
Old Ocean Reserves	Old Ocean Reserves, LP, formerly JDH Capital Holdings, L.P.
OTC	Over-the-counter, as related to aftermarket services parts and components
ROU	Right-of-use, as related to the lease model under Accounting Standards Codification Topic 842 Leases
SEC	U.S. Securities and Exchange Commission
SG&A	Selling, general and administrative
U.S.	United States of America

3

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains “forward-looking statements” intended to qualify for the safe harbors from liability established by the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact contained in this Quarterly Report on Form 10-Q are forward-looking statements within the meaning of Section 21E of the Exchange Act, including, without limitation, our business growth strategy and projected costs; future financial position; the sufficiency of available cash flows to fund continuing operations and pay dividends; the expected amount of our capital expenditures; anticipated cost savings; future revenue, gross margin and other financial or operational measures related to our business; the future value of our equipment; and plans and objectives of our management for our future operations. You can identify many of these statements by words such as “believe,” “expect,” “intend,” “project,” “anticipate,” “estimate,” “will continue” or similar words or the negative thereof.

Such forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from those anticipated as of the date of this Quarterly Report on Form 10-Q. Although we believe that the expectations reflected in these forward-looking statements are based on reasonable assumptions, no assurance can be given that these expectations will prove to be correct. Known material factors that could cause our actual results to differ materially from the expectations reflected in these forward-looking statements include the risk factors described in our 2021 Form 10-K and those set forth from time to time in our filings with the SEC, which are available through our website at www.archrock.com and through the SEC’s website at www.sec.gov.

All forward-looking statements included in this Quarterly Report on Form 10-Q are based on information available to us on the date of this Quarterly Report on Form 10-Q. Except as required by law, we undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements contained throughout this Quarterly Report on Form 10-Q.

4

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Archrock, Inc.

Condensed Consolidated Balance Sheets

(in thousands, except par value and share amounts)

(unaudited)

	June 30, 2022		December 31, 2021
Assets
Current assets:
Cash and cash equivalents	$	1,950	$	1,569
Accounts receivable, trade, net of allowance of $2,299 and $2,152, respectively		129,323		104,931
Inventory		77,636		72,869
Other current assets		8,126		7,201
Total current assets		217,035		186,570
Property, plant and equipment, net		2,211,744		2,226,526
Operating lease ROU assets		16,796		17,491
Intangible assets, net		42,187		47,887
Contract costs, net		28,784		25,418
Deferred tax assets		41,096		47,879
Other assets		34,485		28,384
Noncurrent assets associated with discontinued operations		9,199		9,811
Total assets	$	2,601,326	$	2,589,966
Liabilities and Equity
Current liabilities:
Accounts payable, trade	$	78,108	$	38,920
Accrued liabilities		66,966		82,517
Deferred revenue		6,455		3,817
Total current liabilities		151,529		125,254
Long-term debt		1,532,438		1,530,825
Operating lease liabilities		14,987		15,940
Deferred tax liabilities		1,332		1,136
Other liabilities		19,254		17,505
Noncurrent liabilities associated with discontinued operations		7,868		7,868
Total liabilities		1,727,408		1,698,528
Commitments and contingencies (Note 18)
Equity:
Preferred stock: $0.01 par value per share, 50,000,000 shares authorized, zero issued		—		—
Common stock: $0.01 par value per share, 250,000,000 shares authorized, 163,385,390 and 161,482,852 shares issued, respectively		1,633		1,615
Additional paid-in capital		3,450,603		3,440,059
Accumulated other comprehensive loss		—		(984)
Accumulated deficit		(2,489,814)		(2,463,114)
Treasury stock: 7,740,919 and 7,417,401 common shares, at cost, respectively		(88,504)		(86,138)
Total equity		873,918		891,438
Total liabilities and equity	$	2,601,326	$	2,589,966

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

5

Archrock, Inc.

Condensed Consolidated Statements of Operations

(in thousands, except per share amounts)

(unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2022		2021		2022		2021
Revenue:
Contract operations	$	166,298	$	163,865	$	329,954	$	329,899
Aftermarket services		49,530		31,750		83,075		61,147
Total revenue		215,828		195,615		413,029		391,046
Cost of sales (excluding depreciation and amortization):
Contract operations		68,355		61,387		132,856		122,752
Aftermarket services		41,710		27,490		70,348		53,273
Total cost of sales (excluding depreciation and amortization)		110,065		88,877		203,204		176,025
Selling, general and administrative		27,691		26,077		55,464		51,161
Depreciation and amortization		41,356		44,193		84,395		89,905
Long-lived and other asset impairment		4,647		2,960		12,063		10,033
Restructuring charges		—		743		—		1,640
Interest expense		24,456		25,958		49,702		57,203
Gain on sale of assets, net		(18,948)		(3,124)		(21,060)		(14,156)
Other (income) expense, net		497		(82)		533		(1,971)
Income before income taxes		26,064		10,013		28,728		21,206
Provision for income taxes		9,318		1,261		10,261		8,285
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Basic and diluted net income per common share	$	0.11	$	0.06	$	0.12	$	0.08
Weighted average common shares outstanding:
Basic		153,033		152,033		152,857		151,537
Diluted		153,164		152,203		152,982		151,699

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

6

Archrock, Inc.

Condensed Consolidated Statements of Comprehensive Income

(in thousands)

(unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2022		2021		2022		2021
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Other comprehensive income, net of tax:
Interest rate swap gain, net of reclassifications to earnings		—		966		574		1,962
Amortization of dedesignated interest rate swap		—		—		410		—
Total other comprehensive income, net of tax		—		966		984		1,962
Comprehensive income	$	16,746	$	9,718	$	19,451	$	14,883

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

7

Archrock, Inc.

Condensed Consolidated Statements of Equity

(in thousands, except share and per share amounts)

(unaudited)

						Accumulated
	Common			Additional		Other				Treasury
	Stock			Paid-in		Comprehensive		Accumulated		Stock
	Amount		Shares	Capital		Loss		Deficit		Amount		Shares	Total
Balance at March 31, 2021	$	1,613	161,323,492	$	3,430,910	$	(4,010)	$	(2,419,974)	$	(85,415)	(7,263,173)	$	923,124
Treasury stock purchased											(4)	(383)		(4)
Cash dividends ($0.145 per common share)									(22,331)					(22,331)
Shares issued under ESPP			16,062		136									136
Stock-based compensation, net of forfeitures					3,178							(14,893)		3,178
Comprehensive income
Net income									8,752					8,752
Interest rate swap gain, net of reclassifications to earnings							966							966
Balance at June 30, 2021	$	1,613	161,339,554	$	3,434,224	$	(3,044)	$	(2,433,553)	$	(85,419)	(7,278,449)	$	913,821
Balance at March 31, 2022	$	1,629	162,919,584	$	3,443,261	$	—	$	(2,484,066)	$	(88,501)	(7,698,812)	$	872,323
Treasury stock purchased											(3)	(303)		(3)
Cash dividends ($0.145 per common share)									(22,494)					(22,494)
Shares issued under ESPP		—	18,786		146									146
Stock-based compensation, net of forfeitures		—	—		2,970							(41,804)		2,970
Net proceeds from issuance of common stock		4	447,020		4,226									4,230
Comprehensive income
Net income									16,746					16,746
Balance at June 30, 2022	$	1,633	163,385,390	$	3,450,603	$	—	$	(2,489,814)	$	(88,504)	(7,740,919)	$	873,918

8

						Accumulated
	Common			Additional		Other				Treasury
	Stock			Paid-in		Comprehensive		Accumulated		Stock
	Amount		Shares	Capital		Loss		Deficit		Amount		Shares	Total
Balance at December 31, 2020	$	1,600	160,014,960	$	3,424,624	$	(5,006)	$	(2,401,988)	$	(83,673)	(7,052,769)	$	935,557
Treasury stock purchased											(1,746)	(184,776)		(1,746)
Cash dividends ($0.290 per common share)									(44,486)					(44,486)
Shares issued under ESPP		—	44,116		371									371
Stock-based compensation, net of forfeitures		9	923,330		5,832							(40,904)		5,841
Net proceeds from issuance of common stock		4	357,148		3,397									3,401
Comprehensive income
Net income									12,921					12,921
Interest rate swap gain, net of reclassifications to earnings							1,962							1,962
Balance at June 30, 2021	$	1,613	161,339,554	$	3,434,224	$	(3,044)	$	(2,433,553)	$	(85,419)	(7,278,449)	$	913,821
Balance at December 31, 2021	$	1,615	161,482,852	$	3,440,059	$	(984)	$	(2,463,114)	$	(86,138)	(7,417,401)	$	891,438
Treasury stock purchased											(2,366)	(272,706)		(2,366)
Cash dividends ($0.290 per common share)									(45,167)					(45,167)
Shares issued under ESPP		—	38,846		295									295
Stock-based compensation, net of forfeitures		14	1,416,672		6,023							(50,812)		6,037
Net proceeds from issuance of common stock		4	447,020		4,226									4,230
Comprehensive income
Net income									18,467					18,467
Interest rate swap gain, net of reclassifications to earnings							574							574
Amortization of dedesignated interest rate swap							410							410
Balance at June 30, 2022	$	1,633	163,385,390	$	3,450,603	$	—	$	(2,489,814)	$	(88,504)	(7,740,919)	$	873,918

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

9

Archrock, Inc.

Condensed Consolidated Statements of Cash Flows

(in thousands)

(unaudited)

	Six Months Ended
	June 30,
	2022		2021
Cash flows from operating activities:
Net income	$	18,467	$	12,921
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		84,395		89,905
Long-lived and other asset impairment		12,063		10,033
Inventory write-downs		721		511
Amortization of operating lease ROU assets		1,575		1,891
Amortization of deferred financing costs		2,576		7,551
Amortization of debt premium		(1,003)		(1,003)
Amortization of dedesignated interest rate swap		410		—
Interest rate swaps		631		2,169
Stock-based compensation expense		6,037		5,841
Provision for credit losses		365		(215)
Gain on sale of assets, net		(4,344)		(8,161)
Gain on sale of business		(16,716)		(5,995)
Deferred income tax provision		9,473		7,995
Amortization of contract costs		9,249		10,752
Deferred revenue recognized in earnings		(11,541)		(5,048)
Change in assets and liabilities:
Accounts receivable, trade		(30,370)		(2,661)
Inventory		(5,779)		(3,569)
Other assets		(1,182)		(244)
Contract costs, net		(13,007)		(6,467)
Accounts payable and other liabilities		13,051		6,358
Deferred revenue		14,032		4,068
Other		421		(15)
Net cash provided by operating activities		89,524		126,617
Cash flows from investing activities:
Capital expenditures		(106,066)		(38,749)
Proceeds from sale of business		55,523		18,795
Proceeds from sale of property, plant and equipment and other assets		9,728		18,178
Proceeds from insurance and other settlements		2,781		910
Investments in unconsolidated entities		(8,000)		—
Net cash used in investing activities		(46,034)		(866)
Cash flows from financing activities:
Borrowings of long-term debt		405,733		343,251
Repayments of long-term debt		(404,500)		(419,751)
Payments for debt issuance costs		—		(2,407)
Payments for settlement of interest rate swaps that include financing elements		(1,334)		(2,169)
Dividends paid to stockholders		(45,167)		(44,486)
Net proceeds from issuance of common stock		4,230		3,401
Proceeds from stock issued under ESPP		295		371
Purchases of treasury stock		(2,366)		(1,746)
Net cash used in financing activities		(43,109)		(123,536)
Net increase in cash and cash equivalents		381		2,215
Cash and cash equivalents, beginning of period		1,569		1,097
Cash and cash equivalents, end of period	$	1,950	$	3,312

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

10

Archrock, Inc.

Notes to Condensed Consolidated Financial Statements

(unaudited)

1. Description of Business and Basis of Presentation

We are an energy infrastructure company with a primary focus on midstream natural gas compression. We are the leading provider of natural gas compression services to customers in the energy industry throughout the U.S. and a leading supplier of aftermarket services to customers that own compression equipment in the U.S. We operate in two business segments: contract operations and aftermarket services. Our predominant segment, contract operations, primarily includes designing, sourcing, owning, installing, operating, servicing, repairing and maintaining our owned fleet of natural gas compression equipment to provide natural gas compression services to our customers. In our aftermarket services business, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with GAAP and the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP are not required in these interim financial statements and have been condensed or omitted. Management believes that the information furnished reflects all normal recurring adjustments necessary to fairly present our consolidated financial position, results of operations and cash flows for the periods indicated. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements presented in our 2021 Form 10-K, which contains a more comprehensive summary of our accounting policies. The interim results reported herein are not necessarily indicative of results for a full year.

2. Business Transactions

May 2022 Disposition

In May 2022, we completed the sale of certain contract operations customer service agreements and approximately 380 compressors, comprising approximately 70,000 horsepower, used to provide compression services under those agreements, as well as other assets used to support the operations. We allocated customer-related and contract-based intangible assets based on a ratio of the horsepower sold relative to the total horsepower of the asset group. We received cash consideration of $55.5 million for the sale and recorded a gain on the sale of $16.7 million in gain on sale of assets, net in our condensed consolidated statements of operations during the three and six months ended June 30, 2022.

February 2021 Disposition

In February 2021, we completed the sale of certain contract operations customer service agreements and approximately 300 compressors, comprising approximately 40,000 horsepower, used to provide compression services under those agreements as well as other assets used to support the operations. We allocated customer-related and contract-based intangible assets based on a ratio of the horsepower sold relative to the total horsepower of the asset group. We recorded a gain on the sale of $6.0 million in gain on sale of assets, net in our condensed consolidated statements of operations during the six months ended June 30, 2021.

3. Inventory

(in thousands)	June 30, 2022		December 31, 2021
Parts and supplies	$	61,571	$	63,628
Work in progress		16,065		9,241
Inventory	$	77,636	$	72,869

11

4. Property, Plant and Equipment, net

(in thousands)	June 30, 2022		December 31, 2021
Compression equipment, facilities and other fleet assets	$	3,259,841	$	3,273,770
Land and buildings		44,205		43,540
Transportation and shop equipment		89,866		92,490
Computer hardware and software		77,393		76,908
Other		6,250		6,229
Property, plant and equipment		3,477,555		3,492,937
Accumulated depreciation		(1,265,811)		(1,266,411)
Property, plant and equipment, net	$	2,211,744	$	2,226,526

5. Equity Investments

Investments in which we are deemed to exert significant influence, but not control, are accounted for using the equity method of accounting, except in cases where the fair value option is elected. For such investments where we have elected the fair value option, the election is irrevocable and is applied on an investment-by-investment basis at initial recognition. In April 2022, we agreed to acquire for cash a 25% equity interest in ECOTEC, a company specializing in methane emissions monitoring and management. We have elected the fair value option to account for this investment. As of June 30, 2022, our ownership interest in ECOTEC was 14%, which was included in other assets in our condensed consolidated balance sheets. Changes in the fair value of this investment are recognized in other (income) expense, net in our condensed consolidated statements of operations.

6. Hosting Arrangements

We have hosting arrangements that are service contracts related to the cloud migration of our ERP system and cloud services for our mobile workforce, telematics and inventory management tools.

As of June 30, 2022 and December 31, 2021, we had $14.8 million and $12.7 million, respectively, of capitalized implementation costs related to these hosting arrangements included in other assets in our condensed consolidated balance sheets. Accumulated amortization was $1.6 million and $0.7 million at June 30, 2022 and December 31, 2021, respectively. We recorded $0.5 million and $0.1 million of amortization expense to SG&A in our condensed consolidated statements of operations during the three months ended June 30, 2022 and 2021, respectively, and $0.9 million and $0.2 million during the six months ended June 30, 2022 and 2021, respectively.

7. Long-Term Debt

(in thousands)	June 30, 2022		December 31, 2021
Credit Facility	$	235,733	$	234,500
2028 Notes
Principal		800,000		800,000
Premium, net of amortization		11,533		12,536
Deferred financing costs, net of amortization		(9,574)		(10,406)
		801,959		802,130
2027 Notes
Principal		500,000		500,000
Deferred financing costs, net of amortization		(5,254)		(5,805)
		494,746		494,195
Long-term debt	$	1,532,438	$	1,530,825

12

Credit Facility

As of June 30, 2022, there were $5.8 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.3%. The weighted average annual interest rate on the outstanding balance under the Credit Facility, excluding the effect of interest rate swaps, was 3.9% and 2.6% at June 30, 2022 and December 31, 2021, respectively. We incurred $0.5 million and $0.4 million in commitment fees on the daily unused amount of the Credit Facility during the three months ended June 30, 2022 and 2021, respectively, and $1.0 million during each of the six months ended June 30, 2022 and 2021.

As of June 30, 2022, we were in compliance with all covenants under our Credit Facility agreement. As a result of the facility’s financial ratio requirements, $476.6 million of the $508.5 million of undrawn capacity was available for additional borrowings as of June 30, 2022.

In February 2021, we amended our Credit Facility to, among other things, reduce the aggregate revolving commitment from $1.25 billion to $750.0 million and adjust certain financial ratios. We wrote off $4.9 million of unamortized deferred financing costs as a result of the amendment, which was recorded to interest expense in our condensed consolidated statements of operations during the six months ended June 30, 2021.

8. Accumulated Other Comprehensive Loss

Components of comprehensive income (loss) are net income (loss) and all changes in equity during a period except those resulting from transactions with owners. Our accumulated other comprehensive loss consists of changes in the fair value of our interest rate swap derivative instruments, net of tax.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Beginning accumulated other comprehensive loss	$	—	$	(4,010)	$	(984)	$	(5,006)
Other comprehensive income, net of tax:
Loss recognized in other comprehensive income, net of tax benefit of $0, $16, $107 and $18, respectively		—		(63)		(405)		(71)
Loss reclassified from accumulated other comprehensive loss to interest expense, net of tax benefit of $0, $273, $369 and $540, respectively		—		1,029		1,389		2,033
Total other comprehensive income		—		966		984		1,962
Ending accumulated other comprehensive loss	$	—	$	(3,044)	$	—	$	(3,044)

See Note 15 (“Derivatives”) for further details on our interest rate swap derivative instruments.

9. Equity

At-the-Market Continuous Equity Offering Program

During the three and six months ended June 30, 2022, we sold 447,020 shares of common stock for net proceeds of $4.2 million pursuant to our ATM agreement.

During the six months ended June 30, 2021, we sold 357,148 shares of common stock under the program for net proceeds of $3.4 million.

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Cash Dividends

The following table summarizes our dividends declared and paid in each of the quarterly periods of 2022 and 2021:

	Declared Dividends		Dividends Paid
	per Common Share		(in thousands)
2022
Q2	$	0.145	$	22,494
Q1		0.145		22,673
2021
Q4	$	0.145	$	22,351
Q3		0.145		22,506
Q2		0.145		22,331
Q1		0.145		22,155

On July 28, 2022, our Board of Directors declared a quarterly dividend of $0.145 per share of common stock to be paid on August 16, 2022 to stockholders of record at the close of business on August 9, 2022.

10. Revenue from Contracts with Customers

The following table presents our revenue from contracts with customers by segment (see Note 20 (“Segments”)) and disaggregated by revenue source:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Contract operations:
0 ― 1,000 horsepower per unit	$	40,489	$	45,918	$	82,331	$	92,837
1,001 ― 1,500 horsepower per unit		68,697		66,852		135,698		135,316
Over 1,500 horsepower per unit		56,885		50,939		111,479		101,342
Other (1)		227		156		446		404
Total contract operations revenue (2)		166,298		163,865		329,954		329,899
Aftermarket services:
Services		26,001		17,008		43,138		33,900
OTC parts and components sales		23,529		14,742		39,937		27,247
Total aftermarket services revenue (3)		49,530		31,750		83,075		61,147
Total revenue	$	215,828	$	195,615	$	413,029	$	391,046

(1) Primarily relates to fees associated with owned non-compression equipment.

(2) Includes $0.9 million and $1.4 million for the three months ended June 30, 2022 and 2021, respectively, and $1.1 million and $2.4 million for the six months ended June 30, 2022 and 2021, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time.

(3) Services revenue within aftermarket services is recognized over time. OTC parts and components sales revenue is recognized at a point in time.

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Performance Obligations

As of June 30, 2022, we had $286.6 million of remaining performance obligations related to our contract operations segment, which will be recognized through 2027 as follows:

(in thousands)	2022		2023		2024		2025		2026		2027		Total
Remaining performance obligations	$	156,370	$	93,290	$	31,041	$	4,819	$	914	$	190	$	286,624

We do not disclose the aggregate transaction price for the remaining performance obligations for aftermarket services as there are no contracts with customers with an original contract term that is greater than one year.

Contract Assets and Liabilities

Contract Assets

As of June 30, 2022 and December 31, 2021, our receivables from contracts with customers, net of allowance for credit losses, were $121.0 million and $84.7 million, respectively.

Allowance for Credit Losses

Trade accounts receivable are due from companies of varying size engaged principally in oil and natural gas activities throughout the U.S. We review the financial condition of customers prior to extending credit and generally do not obtain collateral for trade receivables. Payment terms are on a short-term basis and in accordance with industry practice. We consider this credit risk to be limited due to these companies’ financial resources, the nature of the products and services we provide and the terms of our customer agreements.

Due to the short-term nature of our trade receivables, we consider the amortized cost to be the same as the carrying amount of the receivable, excluding the allowance for credit losses. We recognize an allowance for credit losses when a receivable is recorded, even when the risk of loss is remote. We utilize an aging schedule to determine our allowance for credit losses and measure expected credit losses on a collective (pool) basis when similar risk characteristics exist. We rely primarily on ratings assigned by external rating agencies and credit monitoring services to assess credit risk and aggregate customers first by low, medium or high risk asset pools, and then by delinquency status. We also consider the internal risk associated with geographic location and the services we provide to the customer when determining asset pools. If a customer does not share similar risk characteristics with other customers, we evaluate the customer’s outstanding trade receivables for expected credit losses on an individual basis. Trade receivables evaluated individually are not included in our collective assessment. Each reporting period, we reassess our customers’ risk profiles and determine the appropriate asset pool classification, or perform individual assessments of expected credit losses, based on the customers’ risk characteristics at the reporting date.

The contractual life of our trade receivables is primarily 30 days based on the payment terms specified in the contract. Contract operations services are generally billed monthly at the beginning of the month in which service is being provided. Aftermarket services billings typically occur when parts are delivered or service is completed. Loss rates are separately determined for each asset pool based on the length of time a trade receivable has been outstanding. We analyze two years of internal historical loss data, including the effects of prepayments, write-offs and subsequent recoveries, to determine our historical loss experience. Our historical loss information is a relevant data point for estimating credit losses, as the data closely aligns with trade receivables due from our customers. Ratings assigned by external rating agencies and credit monitoring services consider past performance and forecasts of future economic conditions in assessing credit risk. We routinely update our historical loss data to reflect our customers’ current risk profile, to ensure the historical data and loss rates are relevant to the pool of assets for which we are estimating expected credit losses.

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Our allowance for credit losses balance changed as follows during the six months ended June 30, 2022:

(in thousands)
Balance at December 31, 2021	$	2,152
Provision for credit losses		365
Write-offs charged against allowance		(218)
Balance at June 30, 2022	$	2,299

Contract Liabilities

Freight billings to customers for the transport of compression assets, customer-specified modifications of compression assets and milestone billings on aftermarket services often result in a contract liability. Our contract liabilities were $6.9 million and $4.4 million as of June 30, 2022 and December 31, 2021, respectively, and were included in deferred revenue and other liabilities in our condensed consolidated balance sheets. During the six months ended June 30, 2022, we deferred revenue of $14.0 million and recognized $11.5 million as revenue. The revenue recognized and deferred during the period primarily related to freight billings and milestone billings on aftermarket services.

11. Long-Lived and Other Asset Impairment

We review long-lived assets, including property, plant and equipment and identifiable intangibles that are being amortized, for impairment whenever events or changes in circumstances, including the removal of compressors from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

Compression Fleet

We periodically review the future deployment of our idle compression assets for units that are not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. Based on these reviews, we determine that certain idle compressors should be retired from the active fleet. The retirement of these units from the active fleet triggers a review of these assets for impairment and as a result of our review, we may record an asset impairment to reduce the book value of each unit to its estimated fair value. The fair value of each unit is estimated based on the expected net sale proceeds compared to other fleet units we recently sold, a review of other units recently offered for sale by third parties or the estimated component value of the equipment we plan to use.

In connection with our review of our idle compression assets, we evaluate for impairment idle units that were culled from our fleet in prior years and are available for sale. Based on that review, we may reduce the expected proceeds from disposition and record additional impairment to reduce the book value of each unit to its estimated fair value.

The following table presents the results of our compression fleet impairment review as recorded to our contract operations segment:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(dollars in thousands)	2022		2021		2022		2021
Idle compressors retired from the active fleet		30		45		75		115
Horsepower of idle compressors retired from the active fleet		26,000		13,000		57,000		37,000
Impairment recorded on idle compressors retired from the active fleet	$	4,647	$	2,832	$	12,056	$	9,844

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12. Restructuring Charges

In response to the decreased activity level of our customers that resulted from the coronavirus pandemic beginning in the second quarter of 2020, we incurred severance costs totaling $7.0 million to right-size our business in 2020 and 2021. No additional costs will be incurred under this restructuring plan.

During the third quarter of 2020, a plan to dispose of certain non-core properties was approved by management. We incurred $1.5 million of costs in 2020 and 2021 as a result of these property disposals. No additional costs will be incurred under this restructuring plan.

The severance and property disposal costs incurred under the above restructuring plans were recorded to restructuring charges in our condensed consolidated statements of operations.

The following table presents restructuring charges incurred by segment:

	Contract		Aftermarket
(in thousands)	Operations		Services		Other (1)		Total
Three months ended June 30, 2021
Pandemic restructuring	$	337	$	121	$	147	$	605
2020 property restructuring		—		—		7		7
Other restructuring		—		—		131		131
Total restructuring charges	$	337	$	121	$	285	$	743
Six months ended June 30, 2021
Pandemic restructuring	$	616	$	145	$	732	$	1,493
2020 property restructuring		—		—		16		16
Other restructuring		—		—		131		131
Total restructuring charges	$	616	$	145	$	879	$	1,640

(1) Represents expense incurred within our corporate function and not directly attributable to our segments.

The following table presents restructuring charges incurred by cost type:

	Three Months Ended		Six Months Ended
(in thousands)	June 30, 2021		June 30, 2021
Severance costs	$	605	$	1,493
Property disposal costs
Impairment		—		9
Other exit costs		7		7
Total property disposal costs		7		16
Other restructuring costs		131		131
Total restructuring charges	$	743	$	1,640

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13. Income Taxes

Valuation Allowance

The amount of our deferred tax assets considered realizable could be adjusted if projections of future taxable income are reduced or objective negative evidence in the form of a three-year cumulative loss is present or both. Should we no longer have a level of sustained profitability, excluding nonrecurring charges, we will have to rely more on our future projections of taxable income to determine if we have an adequate source of taxable income for the realization of our deferred tax assets, namely net operating loss, interest limitation and tax credit carryforwards. This may result in the need to record a valuation allowance against all or a portion of our deferred tax assets.

Effective Tax Rate

The year-to-date effective tax rate for the six months ended June 30, 2022 differed significantly from our statutory rate primarily due to unrecognized tax benefits and the limitation on executive compensation.

Unrecognized Tax Benefits

As of June 30, 2022, we believe it is reasonably possible that $2.7 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to June 30, 2023 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities that could materially differ from this estimate.

14. Earnings per Share

Basic net income (loss) per common share is computed using the two-class method, which is an earnings allocation formula that determines net income (loss) per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. Under the two-class method, basic net income (loss) per common share is determined by dividing net income (loss), after deducting amounts allocated to participating securities, by the weighted average number of common shares outstanding for the period. Participating securities include unvested restricted stock and stock-settled restricted stock units that have nonforfeitable rights to receive dividends or dividend equivalents, whether paid or unpaid. During periods of net loss, only distributed earnings (dividends) are allocated to participating securities, as participating securities do not have a contractual obligation to participate in our undistributed losses.

Diluted net income (loss) per common share is computed using the weighted average number of shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding options, performance-based restricted stock units and stock to be issued pursuant to our ESPP unless their effect would be anti-dilutive.

The following table shows the calculation for net income attributable to common stockholders, which is used in the calculation of basic and diluted net income per common share:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Less: Earnings attributable to participating securities		(305)		(285)		(819)		(454)
Net income attributable to common stockholders	$	16,441	$	8,467	$	17,648	$	12,467

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The following table shows the potential shares of common stock that were included in computing diluted net income per common share:

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
Weighted average common shares outstanding including participating securities	155,188	154,047	155,005	153,334
Less: Weighted average participating securities outstanding	(2,155)	(2,014)	(2,148)	(1,797)
Weighted average common shares outstanding used in basic net income per common share	153,033	152,033	152,857	151,537
Net dilutive potential common shares issuable:
On vesting of restricted stock units	128	169	123	159
On settlement of ESPP shares	3	1	2	3
Weighted average common shares outstanding used in diluted net income per common share	153,164	152,203	152,982	151,699

The following table shows the potential shares of common stock issuable that were excluded from computing diluted net income per common share as their inclusion would have been anti-dilutive:

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
On exercise of options where exercise price is greater than average market value for the period	—	22	—	33

15. Derivatives

We are exposed to market risks associated with changes in the variable interest rate of our Credit Facility. We have used derivative instruments, in the form of interest rate swaps, to manage our exposure to fluctuations in this variable interest rate and thereby minimize the risks and costs associated with financial activities. We do not use derivative instruments for trading or other speculative purposes.

In March 2022, our $300.0 million notional value of interest rate swaps expired. We previously entered into these swaps to offset changes in expected cash flows due to fluctuations in the associated variable interest rates and designated them as cash flow hedges. There was no nonperformance by any counterparty during the terms of the interest rate swaps and no collateral was posted for the instruments.

Prior to expiration, during the third quarter of 2021, we dedesignated $125.0 million notional value of our interest rate swaps. The fair value of this interest rate swap immediately prior to dedesignation was a liability of $1.6 million. The associated amount in accumulated other comprehensive loss related to this interest rate swap was amortized into interest expense over the remaining term of the swap through March 2022. Changes in the fair value of the dedesignated interest rate swap after dedesignation and prior to expiration were recorded in interest expense.

The remaining $175.0 million notional value of our interest rate swaps were designated as (highly effective) cash flow hedging instruments until their expiration. Changes in the fair value of cash flow hedging instruments are recognized as a component of other comprehensive income (loss) until the hedged transaction affects earnings. At that time, amounts are reclassified into earnings to interest expense, the same statement of operations line item to which the earnings effect of the hedged item is recorded. Cash flows from derivatives designated as hedges are classified in our condensed consolidated statements of cash flows under the same category as the cash flows from the underlying assets, liabilities or anticipated transactions unless the derivative contract contains a significant financing element, in which case, the cash settlements for those derivatives are classified as cash flows from financing activities.

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The following table presents the effect of our derivative instruments on our condensed consolidated balance sheets:

(in thousands)	June 30, 2022		December 31, 2021
Interest rate swaps designated as cash flow hedging instruments
Accrued liabilities	$	—	$	727
Interest rate swaps not designated as hedging instruments
Accrued liabilities		—		523
Total derivative liabilities	$	—	$	1,250

The following table presents the effect of our derivative instruments on our condensed consolidated statements of operations:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	$	24,456	$	25,958	$	49,702	$	57,203
Interest rate swaps designated as cash flow hedging instruments
Pre-tax loss recognized in other comprehensive income	$	—	$	(79)	$	(512)	$	(89)
Pre-tax loss reclassified from accumulated other comprehensive loss into interest expense		—		(1,302)		(1,758)		(2,573)
Interest rate swaps not designated as hedging instruments
Gain recognized in interest expense	$	—	$	—	$	523	$	—

See Note 8 (“Accumulated Other Comprehensive Loss”) and Note 16 (“Fair Value Measurements”) for further details on our derivative instruments.

16. Fair Value Measurements

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Investment in ECOTEC

During the three months ended June 30, 2022, we acquired a 14% equity interest in ECOTEC. To provide for greater transparency, we elected the fair value option to account for this investment. The fair value is internally calculated using a market approach and is classified as a Level 3 measurement. At June 30, 2022, the fair value of our equity interest in ECOTEC was as follows:

(in thousands)	June 30, 2022
Investment in ECOTEC	$	8,000

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Interest Rate Swaps

Prior to their expiration in the first quarter of 2022, our interest rate swap derivative instruments were valued quarterly based on the income approach (discounted cash flow) using market observable inputs, including LIBOR forward curves. These fair value measurements were classified as Level 2. The following table presents our derivative position measured at fair value on a recurring basis, with pricing levels as of the date of valuation:

(in thousands)	June 30, 2022		December 31, 2021
Derivative liabilities	$	—	$	1,250

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2022, we recorded nonrecurring fair value measurements related to our idle compressors. Our estimate of the compressors’ fair value was primarily based on the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use. We discounted the expected proceeds, net of selling and other carrying costs, using a weighted average disposal period of four years. These fair value measurements are classified as Level 3. The fair value of our compressors impaired during 2022 and 2021 was as follows:  

(in thousands)	June 30, 2022		December 31, 2021
Impaired compressors	$	1,010	$	4,380

The significant unobservable inputs used to develop the above fair value measurements were weighted by the relative fair value of the compressors being measured. Additional quantitative information related to our significant unobservable inputs follows:

	Range	Weighted Average (1)
Estimated net sale proceeds:
As of June 30, 2022	$0 - $621 per horsepower	$41 per horsepower
As of December 31, 2021	$0 - $621 per horsepower	$35 per horsepower

(1) Calculated based on an estimated discount for market liquidity of 57% and 64% as of June 30, 2022 and December 31, 2021, respectively.

See Note 11 (“Long-Lived and Other Asset Impairment”) for further details.

Other Financial Instruments

The carrying amounts of our cash, receivables and payables approximate fair value due to the short-term nature of those instruments.

The carrying amount of borrowings outstanding under our Credit Facility approximates fair value due to its variable interest rate. The fair value of these outstanding borrowings is a Level 3 measurement.

The fair value of our fixed rate debt is estimated using yields observable in active markets, which are Level 2 inputs, and was as follows:

(in thousands)	June 30, 2022		December 31, 2021
Carrying amount of fixed rate debt (1)	$	1,296,705	$	1,296,325
Fair value of fixed rate debt		1,161,000		1,361,000

(1) Carrying amounts are shown net of unamortized premium and deferred financing costs. See Note 7 (“Long-Term Debt”).

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17. Stock-Based Compensation

We recognize stock-based compensation expense related to restricted stock awards, restricted stock units, performance-based restricted stock units and shares issued under our ESPP.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Equity award expense	$	2,970	$	3,178	$	6,037	$	5,841
Liability award expense		377		408		880		994
Total stock-based compensation expense	$	3,347	$	3,586	$	6,917	$	6,835

The following table presents our restricted stock activity during the six months ended June 30, 2022:

		Weighted
		Average
		Grant Date
	Shares	Fair Value
	(in thousands)	Per Share
Non-vested restricted stock, December 31, 2021	2,578	$	10.35
Granted	1,861		9.03
Vested	(1,106)		10.31
Canceled	(188)		9.35
Non-vested restricted stock, June 30, 2022 (1)	3,145		9.64

(1) Comprised of 508 cash-settled units and 2,637 stock-settled awards and units.

As of June 30, 2022, we expect $21.3 million of unrecognized compensation cost related to our non-vested awards and units to be recognized over the weighted average period of 2.1 years.

18. Commitments and Contingencies

Insurance Matters

Our business can be hazardous, involving unforeseen circumstances such as uncontrollable flows of natural gas or well fluids and fires or explosions. As is customary in our industry, we review our safety equipment and procedures and carry insurance against some, but not all, risks of our business. Our insurance coverage includes property damage, general liability and commercial automobile liability and other coverage we believe is appropriate. We believe that our insurance coverage is customary for the industry and adequate for our business, however, losses and liabilities not covered by insurance would increase our costs.

Additionally, we are substantially self-insured for workers’ compensation and employee group health claims in view of the relatively high per-incident deductibles we absorb under our insurance arrangements for these risks. Losses up to the deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages. We are also self-insured for property damage to our offshore assets.

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Tax Matters

We are subject to a number of state and local taxes that are not income-based. As many of these taxes are subject to audit by the taxing authorities, it is possible that an audit could result in additional taxes due. We accrue for such additional taxes when we determine that it is probable that we have incurred a liability and we can reasonably estimate the amount of the liability. As of June 30, 2022 and December 31, 2021, we had $3.9 million and $5.8 million, respectively, accrued for the outcomes of non-income-based tax audits. We do not expect that the ultimate resolutions of these audits will result in a material variance from the amounts accrued. We do not accrue for unasserted claims for tax audits unless we believe the assertion of a claim is probable, it is probable that it will be determined that the claim is owed and we can reasonably estimate the claim or range of the claim. We believe the likelihood is remote that the impact of potential unasserted claims from non-income-based tax audits could be material to our consolidated financial position, but it is possible that the resolution of future audits could be material to our consolidated results of operations or cash flows.

In 2021, one of our sales and use tax audits advanced from the audit review phase to the contested hearing phase. We had $0.6 million accrued for this audit as of both June 30, 2022 and December 31, 2021.

Litigation and Claims

In the ordinary course of business, we are involved in various pending or threatened legal actions. While we are unable to predict the ultimate outcome of these actions, we believe that any ultimate liability arising from any of these actions will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends. However, because of the inherent uncertainty of litigation and arbitration proceedings, we cannot provide assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends.

19. Related Party Transactions

Old Ocean Reserves, an affiliate of our customer Hilcorp, has the right to designate one director to serve on our Board of Directors as long as Old Ocean Reserves or its successors (together with its affiliates) owns at least 7.5% of our outstanding common stock. As of June 30, 2022, Old Ocean Reserves owned 10.7% of our outstanding common stock. Jason C. Rebrook, Chief Executive Officer and Director of Harvest Midstream Company, a Hilcorp affiliate, has served as Old Ocean Reserves’ representative director since July 2020.

Revenue from Hilcorp and affiliates was $9.2 million and $9.6 million during the three months ended June 30, 2022 and 2021, respectively, and $18.6 million and $19.1 million during the six months ended June 30, 2022 and 2021, respectively. Accounts receivable, net due from Hilcorp and affiliates was $4.3 million and $3.7 million as of June 30, 2022 and December 31, 2021, respectively.

20. Segments

We manage our business segments primarily based on the type of product or service provided. We have two segments which we operate within the U.S.: contract operations and aftermarket services. The contract operations segment primarily provides natural gas compression services to meet specific customer requirements. The aftermarket services segment provides a full range of services to support the compression needs of customers, from parts sales and normal maintenance services to full operation of a customer’s owned assets.

We evaluate the performance of our segments based on gross margin for each segment. Revenue includes only sales to external customers.

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	Contract		Aftermarket
(in thousands)	Operations		Services		Total
Three months ended June 30, 2022
Revenue	$	166,298	$	49,530	$	215,828
Gross margin		97,943		7,820		105,763
Three months ended June 30, 2021
Revenue	$	163,865	$	31,750	$	195,615
Gross margin		102,478		4,260		106,738
Six months ended June 30, 2022
Revenue	$	329,954	$	83,075	$	413,029
Gross margin		197,098		12,727		209,825
Six months ended June 30, 2021
Revenue	$	329,899	$	61,147	$	391,046
Gross margin		207,147		7,874		215,021

The following table reconciles total gross margin to income before income taxes:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total gross margin	$	105,763	$	106,738	$	209,825	$	215,021
Less:
Selling, general and administrative		27,691		26,077		55,464		51,161
Depreciation and amortization		41,356		44,193		84,395		89,905
Long-lived and other asset impairment		4,647		2,960		12,063		10,033
Restructuring charges		—		743		—		1,640
Interest expense		24,456		25,958		49,702		57,203
Gain on sale of assets, net		(18,948)		(3,124)		(21,060)		(14,156)
Other (income) expense, net		497		(82)		533		(1,971)
Income before income taxes	$	26,064	$	10,013	$	28,728	$	21,206

21. Impact of Hurricane

In August 2021, Hurricane Ida caused operational disruptions, damage to compressors and a temporary shutdown of facilities in Louisiana that negatively impacted our financial performance in the quarter. At December 31, 2021, we had an insurance recovery receivable of $2.8 million related to the facility and compressor damages, which we received in cash in the first quarter of 2022. The remaining portion of our insurance claim pertaining to business interruption is in process. Any amount recovered will not be subject to an additional deductible and will be recognized upon notice of final settlement.

22. Subsequent Event

On July 1, 2022, we acquired an additional 5% equity interest in ECOTEC, which increased our total ownership interest to 19%.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited Financial Statements and the notes thereto included in this Quarterly Report on Form 10-Q and in conjunction with our 2021 Form 10-K.

Overview

We are an energy infrastructure company with a primary focus on midstream natural gas compression. We are the leading provider of natural gas compression services to customers in the energy industry throughout the U.S. and a leading supplier of aftermarket services to customers that own compression equipment in the U.S. We operate in two business segments: contract operations and aftermarket services. Our contract operations services primarily include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining our owned fleet of natural gas compression equipment to provide natural gas compression services to our customers. In our aftermarket services business, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

Recent Business Developments

May 2022 Disposition

In May 2022, we completed the sale of certain contract operations customer service agreements and approximately 380 compressors, comprising approximately 70,000 horsepower, used to provide compression services under those agreements, as well as other assets used to support the operations. We received cash consideration of $55.5 million for the sale and recorded a gain on the sale of $16.7 million during the three and six months ended June 30, 2022. See Note 2 (“Business Transactions”) to our Financial Statements for further details of this transaction.

Investment in ECOTEC

In April 2022, we agreed to acquire for cash a 25% equity interest in ECOTEC, a company specializing in methane emissions monitoring and management. As of June 30, 2022, our ownership interest was 14%. See Note 5 (“Equity Investments”) to our Financial Statements for further details.

Operating Highlights

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(horsepower in thousands)	2022		2021		2022		2021
Total available horsepower (at period end)(1)	3,810		4,041		3,810		4,041
Total operating horsepower (at period end)(2)	3,322		3,295		3,322		3,295
Average operating horsepower	3,297		3,316		3,277		3,339
Horsepower utilization:
Spot (at period end)	87	%	82	%	87	%	82	%
Average	86	%	82	%	85	%	82	%

(1) Defined as idle and operating horsepower. Includes new compressors completed by third party manufacturers that have been delivered to us.

(2) Defined as horsepower that is operating under contract and horsepower that is idle but under contract and generating revenue such as standby revenue.

Non-GAAP Financial Measures

Management uses a variety of financial and operating metrics to analyze our performance. These metrics are significant factors in assessing our operating results and profitability and include the non-GAAP financial measure of gross margin.

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We define gross margin as total revenue less cost of sales (excluding depreciation and amortization). Gross margin is included as a supplemental disclosure because it is a primary measure used by our management to evaluate the results of revenue and cost of sales (excluding depreciation and amortization), which are key components of our operations. We believe gross margin is important because it focuses on the current operating performance of our operations and excludes the impact of the prior historical costs of the assets acquired or constructed that are utilized in those operations, the indirect costs associated with our SG&A activities, our financing methods and income taxes. In addition, depreciation and amortization may not accurately reflect the costs required to maintain and replenish the operational usage of our assets and therefore may not portray the costs of current operating activity. As an indicator of our operating performance, gross margin should not be considered an alternative to, or more meaningful than, net income (loss) as determined in accordance with GAAP. Our gross margin may not be comparable to a similarly-titled measure of other entities because other entities may not calculate gross margin in the same manner.

Gross margin has certain material limitations associated with its use as compared to net income (loss). These limitations are primarily due to the exclusion of SG&A, depreciation and amortization, impairments, restructuring charges, interest expense, (gain) loss on sale of assets, net, other (income) expense, net and provision for (benefit from) income taxes. Because we intend to finance a portion of our operations through borrowings, interest expense is a necessary element of our costs and our ability to generate revenue. Additionally, because we use capital assets, depreciation expense is a necessary element of our costs and our ability to generate revenue and SG&A is necessary to support our operations and required corporate activities. To compensate for these limitations, management uses this non-GAAP measure as a supplemental measure to other GAAP results to provide a more complete understanding of our performance.

The following table reconciles net income to gross margin:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Selling, general and administrative		27,691		26,077		55,464		51,161
Depreciation and amortization		41,356		44,193		84,395		89,905
Long-lived and other asset impairment		4,647		2,960		12,063		10,033
Restructuring charges		—		743		—		1,640
Interest expense		24,456		25,958		49,702		57,203
Gain on sale of assets, net		(18,948)		(3,124)		(21,060)		(14,156)
Other (income) expense, net		497		(82)		533		(1,971)
Provision for income taxes		9,318		1,261		10,261		8,285
Gross margin	$	105,763	$	106,738	$	209,825	$	215,021

Results of Operations: Summary of Results

Revenue

Revenue was $215.8 million and $195.6 million during the three months ended June 30, 2022 and 2021, respectively, and $413.0 million and $391.0 million during the six months ended June 30, 2022 and 2021, respectively. The increases in consolidated revenue during these periods were primarily due to increased revenue from our aftermarket services business. See “Contract Operations” and “Aftermarket Services” below for further details.

Net Income

Net income was $16.7 million and $8.8 million during the three months ended June 30, 2022 and 2021, respectively. The increase was primarily driven by increases in gain on sale of assets, net and gross margin from our aftermarket services business, as well as decreases in depreciation and amortization and interest expense. These changes were partially offset by a decrease in gross margin from our contract operations business and increases in our provision for income taxes, SG&A and long-lived and other asset impairment.

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Net income was $18.5 million and $12.9 million during the six months ended June 30, 2022 and 2021, respectively. The increase was primarily driven by increases in gain on sale of assets, net and gross margin from our aftermarket services business, as well as decreases in interest expense, depreciation and amortization and restructuring charges. These changes were partially offset by a decrease in gross margin from our contract operations business, increases in SG&A, long-lived and other asset impairment and provision for income taxes and a change from net other income to net other expense.

Results of Operations: Three Months Ended June 30, 2022 Compared to Three Months Ended June 30, 2021

Contract Operations

	Three Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Revenue	$	166,298		$	163,865		1	%
Cost of sales (excluding depreciation and amortization)		68,355			61,387		11	%
Gross margin	$	97,943		$	102,478		(4)	%
Gross margin percentage (1)		59	%		63	%	(4)	%

(1) Defined as gross margin divided by revenue.

Revenue increased primarily due to an increase in contract operations rates in response to improving market conditions and units returning to operating status from standby, which was partially offset by the impact of the strategic disposition of 147,000 horsepower in 2021. Adjusting for these dispositions, operating horsepower increased quarter over quarter.

Despite this increase in revenue, gross margin decreased due to a larger increase in cost of sales. Start-up, maintenance, lube oil and other operating expenses increased, driven by higher pricing throughout our supply chain, as well as increased volumes associated with unit redeployment as customer activity accelerated. Partially offsetting these cost increases was the decrease in expense attributable to the horsepower sold in 2021.

Aftermarket Services

	Three Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Revenue	$	49,530		$	31,750		56	%
Cost of sales (excluding depreciation and amortization)		41,710			27,490		52	%
Gross margin	$	7,820		$	4,260		84	%
Gross margin percentage		16	%		13	%	3	%

Revenue increased primarily due to increases in parts sales and service activities, as the market recovery drove an increase in customer demand.

Gross margin increased due to the increase in revenue and despite an increase in cost of sales, which was primarily driven by the same increases in parts sales and service activities.  

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Costs and Expenses

	Three Months Ended
	June 30,
(in thousands)	2022		2021
Selling, general and administrative	$	27,691	$	26,077
Depreciation and amortization		41,356		44,193
Long-lived and other asset impairment		4,647		2,960
Restructuring charges		—		743
Interest expense		24,456		25,958
Gain on sale of assets, net		(18,948)		(3,124)
Other (income) expense, net		497		(82)

Selling, general and administrative. The increase in SG&A was primarily due to a $0.7 million increase in bad debt expense and a $0.7 million increase in information technology expense, which largely consisted of increased service agreement costs and amortization of capitalized implementation costs related to the substantial completion of our process and technology transformation project at the end of 2021.

Depreciation and amortization. The decrease in depreciation and amortization expense was primarily due to a decrease in depreciation expense resulting from assets reaching the end of their depreciable lives and the impact of compression and other asset sales. These decreases were partially offset by an increase in depreciation expense associated with fixed asset additions.

Long-lived and other asset impairment. We periodically review the future deployment of our idle compressors for units that are not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. In addition, we evaluate for impairment idle units that have been culled from our compression fleet in prior years and are available for sale. See Note 11 (“Long-Lived and Other Asset Impairment”) to our Financial Statements for further details. The following table presents the results of our compression fleet impairment review, as recorded in our contract operations segment:

	Three Months Ended
	June 30,
(dollars in thousands)	2022		2021
Idle compressors retired from the active fleet		30		45
Horsepower of idle compressors retired from the active fleet		26,000		13,000
Impairment recorded on idle compressors retired from the active fleet	$	4,647	$	2,832

Restructuring charges. Restructuring charges of $0.7 million during the three months ended June 30, 2021 primarily consisted of severance costs related to our pandemic restructuring activities. See Note 12 (“Restructuring Charges”) to our Financial Statements for further details.

Interest expense. The decrease in interest expense was primarily due to a decrease in the average outstanding balance of long-term debt.

Gain on sale of assets, net. The increase in gain on sale of assets, net was primarily due to the $16.7 million gain on the May 2022 Disposition and gains of $1.8 million recognized on other compression assets sold during the three months ended June 30, 2022, compared to gains of $2.1 million and $1.1 million recognized on sales of compression assets and transportation and shop assets, respectively, during the three months ended June 30, 2021.

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Provision for Income Taxes

	Three Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Provision for income taxes	$	9,318		$	1,261		639	%
Effective tax rate		36	%		13	%	23	%

The increase in provision for income taxes was primarily due to the tax effect of the increase in book income during the three months ended June 30, 2022 compared to the three months ended June 30, 2021.

Results of Operations: Six Months Ended June 30, 2022 Compared to Six Months Ended June 30, 2021

Contract Operations

	Six Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Revenue	$	329,954		$	329,899		—	%
Cost of sales (excluding depreciation and amortization)		132,856			122,752		8	%
Gross margin	$	197,098		$	207,147		(5)	%
Gross margin percentage		60	%		63	%	(3)	%

Revenue was unchanged primarily due to an increase in contract operations rates in response to improving market conditions and units returning to operating status from standby, and the offsetting impact of the strategic disposition of 147,000 horsepower in 2021. Adjusting for these dispositions, operating horsepower increased year over year.

With revenue unchanged, gross margin decreased with the increase in cost of sales. Start-up, maintenance, lube oil and other operating expenses increased, driven by higher pricing throughout our supply chain, as well as increased volumes associated with unit redeployment as customer activity accelerated. Partially offsetting these cost increases was the decrease in expense attributable to the horsepower sold in 2021.

Aftermarket Services

	Six Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Revenue	$	83,075		$	61,147		36	%
Cost of sales (excluding depreciation and amortization)		70,348			53,273		32	%
Gross margin	$	12,727		$	7,874		62	%
Gross margin percentage		15	%		13	%	2	%

Revenue increased primarily due to increases in parts sales and service activities, as the market recovery drove an increase in customer demand.

Gross margin increased due to the increase in revenue and despite an increase in cost of sales, which was primarily driven by the same increases in parts sales and service activities.

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Costs and Expenses

	Six Months Ended
	June 30,
(in thousands)	2022		2021
Selling, general and administrative	$	55,464	$	51,161
Depreciation and amortization		84,395		89,905
Long-lived and other asset impairment		12,063		10,033
Restructuring charges		—		1,640
Interest expense		49,702		57,203
Gain on sale of assets, net		(21,060)		(14,156)
Other (income) expense, net		533		(1,971)

Selling, general and administrative. The increase in SG&A was primarily due to a $1.8 million increase in sales and use tax that was mainly driven by audit settlements in 2021 and no comparable settlements in 2022, a $0.7 million increase in information technology expense, which largely consisted of increased service agreement costs and amortization of capitalized implementation costs related to the substantial completion of our process and technology transformation project at the end of 2021, and $0.6 million increases in each of employee travel and meeting expense and bad debt expense.

Depreciation and amortization. The decrease in depreciation and amortization expense was primarily due to a decrease in depreciation expense resulting from assets reaching the end of their depreciable lives, the impact of compression and other asset sales and impairments and a decrease in amortization expense as certain intangible assets reached the end of their useful lives. These decreases were partially offset by an increase in depreciation expense associated with fixed asset additions.

Long-lived and other asset impairment. We periodically review the future deployment of our idle compressors for units that are not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. In addition, we evaluate for impairment idle units that have been culled from our compression fleet in prior years and are available for sale. See Note 11 (“Long-Lived and Other Asset Impairment”) to our Financial Statements for further details. The following table presents the results of our compression fleet impairment review, as recorded in our contract operations segment:

	Six Months Ended
	June 30,
(dollars in thousands)	2022		2021
Idle compressors retired from the active fleet		75		115
Horsepower of idle compressors retired from the active fleet		57,000		37,000
Impairment recorded on idle compressors retired from the active fleet	$	12,056	$	9,844

Restructuring charges. Restructuring charges of $1.6 million during the six months ended June 30, 2021 primarily consisted of severance costs related to our pandemic restructuring activities. See Note 12 (“Restructuring Charges”) to our Financial Statements for further details.

Interest expense. The decrease in interest expense was primarily due to the $4.9 million write-off of unamortized deferred financing costs related to the amendment of our Credit Facility in the first quarter of 2021 and a decrease in the average outstanding balance of long-term debt.

Gain on sale of assets, net. Our net gain on the sale of assets during the six months ended June 30, 2022 was primarily due to the $16.7 million gain on the May 2022 Disposition and gains of $3.2 million and $1.1 million recognized on sales of other compression assets and transportation and shop assets, respectively, during the period.

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Our net gain on the sale of assets during the six months ended June 30, 2021 was primarily due to the $6.0 million gain on the February 2021 Disposition and gains of $6.4 million and $2.1 million recognized on sales of other compression assets and transportation and shop assets, respectively, during the period.

Other (income) expense, net. The change from net other income to net other expense was primarily due to a $0.9 million reduction in indemnification expense in 2021 due to the settlement of an audit pursuant to our tax matters agreement with Exterran Corporation, as well as income in 2021 of $0.3 million and $0.3 million related to compressor parts recycling and equipment damaged at a customer site, respectively.

Provision for Income Taxes

	Six Months Ended
	June 30,						Increase
(dollars in thousands)	2022			2021			(Decrease)
Provision for income taxes	$	10,261		$	8,285		24	%
Effective tax rate		36	%		39	%	(3)	%

The increase in provision for income taxes was primarily due to the tax effect of the increase in book income during the six months ended June 30, 2022 compared to the six months ended June 30, 2021.

Liquidity and Capital Resources

Overview

Our ability to fund operations, finance capital expenditures and pay dividends depends on the levels of our operating cash flows and access to the capital and credit markets. Our primary sources of liquidity are cash flows generated from our operations and our borrowing availability under our Credit Facility. Our cash flow is affected by numerous factors including prices and demand for our services, oil and natural gas exploration and production spending, conditions in the financial markets and other factors. We have no near-term maturities and believe that our operating cash flows and borrowings under the Credit Facility will be sufficient to meet our future liquidity needs.

We may from time to time seek to retire or purchase our outstanding debt through cash purchases and/or exchanges for equity or debt securities in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, may be material, will be upon terms and prices as we may determine and will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors.

Cash Requirements

Our contract operations business is capital intensive, requiring significant investment to maintain and upgrade existing operations. Our capital spending is primarily dependent on the demand for our contract operations services and the availability of the type of compression equipment required for us to provide those contract operations services to our customers. Our capital requirements have consisted primarily of, and we anticipate will continue to consist of, the following:

• operating expenses, namely employee compensation and benefits and inventory and lube oil purchases;

• growth capital expenditures;

• maintenance capital expenditures;

• interest on our outstanding debt obligations; and

• dividend payments to our stockholders.

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Capital Expenditures

Growth Capital Expenditures. The majority of our growth capital expenditures are related to the acquisition cost of new compressors when our idle equipment cannot be reconfigured to economically fulfill a project’s requirements and the new compressor is expected to generate economic returns that exceed our cost of capital over the compressor’s expected useful life. In addition to newly-acquired compressors, growth capital expenditures include the upgrading of major components on an existing compression package where the current configuration of the compression package is no longer in demand and the compressor is not likely to return to an operating status without the capital expenditures. These expenditures substantially modify the operating parameters of the compression package such that it can be used in applications for which it previously was not suited.

Maintenance Capital Expenditures. Maintenance capital expenditures are related to major overhauls of significant components of a compression package, such as the engine, compressor and cooler, which return the components to a like-new condition, but do not modify the application for which the compression package was designed.

Projected Capital Expenditures. We currently plan to spend approximately $230 million to $235 million in capital expenditures during 2022, primarily consisting of approximately $150 million for growth capital expenditures and approximately $70 million to $75 million for maintenance capital expenditures. We anticipate increased 2022 capital expenditures, particularly growth capital expenditures, as compared to 2021 due to increased investment in new compression equipment as a result of higher customer demand.

Dividends

On July 28, 2022, our Board of Directors declared a quarterly dividend of $0.145 per share of common stock to be paid on August 16, 2022 to stockholders of record at the close of business on August 9, 2022. Any future determinations to pay cash dividends to our stockholders will be at the discretion of our Board of Directors and will be dependent upon our financial condition, results of operations and credit and loan agreements in effect at that time and other factors deemed relevant by our Board of Directors.

Sources of Cash

Revolving Credit Facility

During the six months ended June 30, 2022 and 2021, the Credit Facility had an average daily balance of $231.5 million and $345.3 million, respectively. The weighted average annual interest rate on the outstanding balance under the Credit Facility, excluding the effect of interest rate swaps, was 3.9% and 2.6% at June 30, 2022 and December 31, 2021, respectively. As of June 30, 2022, there were $5.8 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.3%.

As of June 30, 2022, we were in compliance with all covenants under our Credit Facility. As a result of the facility’s financial ratio requirements, $476.6 million of the $508.5 million of undrawn capacity was available for additional borrowings as of June 30, 2022.

At-the-Market Continuous Equity Offering Program

During the six months ended June 30, 2022 and 2021, we sold 447,020 and 357,148 shares of common stock for net proceeds of $4.2 million and $3.4 million, respectively, pursuant to our ATM agreement. See Note 9 (“Equity”) to our Financial Statements for further details.

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Cash Flows

Our cash flows, as reflected in our condensed consolidated statements of cash flows, are summarized below:

	Six Months Ended
	June 30,
(in thousands)	2022		2021
Net cash provided by (used in):
Operating activities	$	89,524	$	126,617
Investing activities		(46,034)		(866)
Financing activities		(43,109)		(123,536)
Net increase in cash and cash equivalents	$	381	$	2,215

Operating Activities

The decrease in net cash provided by operating activities was primarily due to increased cash outflow for cost of sales, contract costs, SG&A and inventory, as well as decreased cash inflow from accounts receivable. Partially offsetting these decreases in operating cash were increased cash inflow from revenue and deferred revenue and decreased cash outflow for accounts payable and other liabilities, restructuring charges and interest paid on long-term debt.

Investing Activities

The increase in net cash used in investing activities was primarily due to a $67.3 million increase in capital expenditures and the $8.0 million investment made in unconsolidated entities during the six months ended June 30, 2022. These cash outflows were partially offset by a $28.3 million increase in proceeds from the sales of property, plant and equipment.

Financing Activities

The decrease in net cash used in financing activities was primarily due to $76.5 million of net repayments of long-term debt during 2021, compared to $1.2 million in net borrowings in 2022.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risk associated with changes in the variable interest rate of our Credit Facility. We have previously used derivative instruments to manage our exposure to fluctuations in this variable interest rate, however, our interest rate swaps expired in the first quarter of 2022, and all borrowings under the Credit Facility are now subject to variable interest rates.

A 1% increase in the effective interest rate on our Credit Facility’s outstanding balance at June 30, 2022 would have resulted in an annual increase in our interest expense of $2.4 million.

Item 4. Controls and Procedures

This Item 4 includes information concerning the controls and controls evaluation referred to in the certifications of our Chief Executive Officer and Chief Financial Officer required by Rule 13a-14 of the Exchange Act included in this Quarterly Report as Exhibits 31.1 and 31.2.

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Management’s Evaluation of Disclosure Controls and Procedures

Disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) are designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that such information is accumulated and communicated to management to allow timely decisions regarding required disclosures.

As of the end of the period covered by this Quarterly Report on Form 10-Q, our principal executive officer and principal financial officer evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act), which are designed to provide reasonable assurance that we are able to record, process, summarize and report the information required to be disclosed in our reports under the Exchange Act within the time periods specified in the rules and forms of the SEC. Based on the evaluation, as of June 30, 2022 our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective to provide reasonable assurance that the information required to be disclosed in reports that we file or submit under the Exchange Act is accumulated and communicated to management, and made known to our principal executive officer and principal financial officer, on a timely basis to ensure that it is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Changes in Internal Control over Financial Reporting

During the first quarter of 2022, we implemented a new ERP system, which replaced our existing core financial systems, resulting in changes to our financial close processes and procedures. As a result of the implementation, certain internal controls over financial reporting were automated, modified or implemented. While we believe the new ERP system will enhance our internal controls, there are inherent risks in implementing any new system, and we will continue to evaluate these control changes as part of our assessment of control design and effectiveness throughout 2022.

There were no other changes in our internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) during the last fiscal quarter that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary course of business, we are involved in various pending or threatened legal actions. While we are unable to predict the ultimate outcome of these actions, we believe that any ultimate liability arising from any of these actions will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends. However, because of the inherent uncertainty of litigation and arbitration proceedings, we cannot provide assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends.

Item 1A. Risk Factors

There have been no material changes or updates to the risk factors previously disclosed in our 2021 Form 10-K.

Item 2. Purchases of Equity Securities by Issuer and Affiliated Purchasers

The following table summarizes our purchases of equity securities during the three months ended June 30, 2022:

					Maximum
					Number of Shares
				Total Number of	That May Yet be
		Average		Shares Purchased	Purchased Under
	Total Number	Price		as Part of Publicly	the Publicly
	of Shares	Paid per		Announced Plans	Announced Plans
	Purchased (1)	Share		or Programs	or Programs
April 1, 2022 — April 30, 2022	303	$	9.16	N/A	N/A
May 1, 2022 — May 31, 2022	—		—	N/A	N/A
June 1, 2022 — June 30, 2022	—		—	N/A	N/A
Total	303		9.16	N/A	N/A

(1) Represents shares withheld to satisfy employees’ tax obligations in connection with the vesting of restricted stock awards during the period.

Item 3. Defaults upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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Item 6. Exhibits

Exhibit No.	Description
3.1	Composite Certificate of Incorporation of Archrock, Inc. (as amended as of November 3, 2015), incorporated by reference to Exhibit 3.3 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2015
3.2	Third Amended and Restated Bylaws of Exterran Holdings, Inc. (now Archrock, Inc.), incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K filed on March 20, 2013
3.3	Amendment No. 1 to Third Amended and Restated Bylaws of Archrock, Inc., incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K filed on May 5, 2020
31.1*	Certification of the Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of the Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1**	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2**	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.1*	Interactive data files (formatted in Inline XBRL) pursuant to Rule 405 of Regulation S-T
104.1*	Cover page interactive data file (formatted in Inline XBRL) pursuant to Rule 406 of Regulation S-T

*      Filed herewith.

**    Furnished, not filed.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Archrock, Inc.
By:	/s/ Douglas S. Aron
	Douglas S. Aron
	Senior Vice President and Chief Financial Officer
	(Principal Financial Officer)
By:	/s/ Donna A. Henderson
	Donna A. Henderson
	Vice President and Chief Accounting Officer
	(Principal Accounting Officer)
	August 3, 2022

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EX-31.1

Exhibit 31.1

Certification

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, D. Bradley Childers, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Archrock, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2022

By:	/s/ D. Bradley Childers
	Name:  D. Bradley Childers
	Title:    President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Douglas S. Aron, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Archrock, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2022

By:	/s/ Douglas S. Aron
	Name:  Douglas S. Aron
	Title:    Senior Vice President and Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

Certification of CEO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Archrock, Inc. (the “Company”) for the quarter ended June 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), D. Bradley Childers, as Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ D. Bradley Childers

Name:  D. Bradley Childers

Title:    President and Chief Executive Officer

Date: August 3, 2022

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification of CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Archrock, Inc. (the “Company”) for the quarter ended June 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Douglas S. Aron, as Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Douglas S. Aron

Name:   Douglas S. Aron

Title:     Senior Vice President and Chief Financial Officer

Date: August 3, 2022

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	6 Months Ended
	Jun. 30, 2022	Jul. 27, 2022
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Commission File Number	001-33666
Entity Registrant Name	Archrock, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-3204509
Entity Street Address	9807 Katy Freeway
Entity Suite Number	Suite 100
Entity City	Houston
Entity State	TX
Entity Postal Zip Code	77024
City Area Code	281
Local Phone Number	836-8000
Title of each class	Common stock, $0.01 par value per share
Trading Symbol	AROC
Name of exchange on which registered	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		155,624,577
Entity Central Index Key	0001389050
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Amendment Flag	false

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 1,950	$ 1,569
Accounts receivable, trade, net of allowance of $2,299 and $2,152, respectively	129,323	104,931
Inventory	77,636	72,869
Other current assets	8,126	7,201
Total current assets	217,035	186,570
Property, plant and equipment, net	2,211,744	2,226,526
Operating lease ROU assets	16,796	17,491
Intangible assets, net	42,187	47,887
Contract costs, net	28,784	25,418
Deferred tax assets	41,096	47,879
Other assets	34,485	28,384
Noncurrent assets associated with discontinued operations	9,199	9,811
Total assets	2,601,326	2,589,966
Current liabilities:
Accounts payable, trade	78,108	38,920
Accrued liabilities	66,966	82,517
Deferred revenue	6,455	3,817
Total current liabilities	151,529	125,254
Long-term debt	1,532,438	1,530,825
Operating lease liabilities	14,987	15,940
Deferred tax liabilities	1,332	1,136
Other liabilities	19,254	17,505
Noncurrent liabilities associated with discontinued operations	7,868	7,868
Total liabilities	1,727,408	1,698,528
Commitments and contingencies (Note 18)
Equity:
Preferred stock: $0.01 par value per share, 50,000,000 shares authorized, zero issued
Common stock: $0.01 par value per share, 250,000,000 shares authorized, 163,385,390 and 161,482,852 shares issued, respectively	1,633	1,615
Additional paid-in capital	3,450,603	3,440,059
Accumulated other comprehensive loss		(984)
Accumulated deficit	(2,489,814)	(2,463,114)
Treasury stock: common shares, at cost	(88,504)	(86,138)
Total equity	873,918	891,438
Total liabilities and equity	$ 2,601,326	$ 2,589,966

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Condensed Consolidated Balance Sheets
Accounts receivable, allowance	$ 2,299	$ 2,152
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	163,385,390	161,482,852
Treasury stock, common shares (in shares)	7,740,919	7,417,401

XML

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues	$ 215,828	$ 195,615	$ 413,029	$ 391,046
Total cost of sales (excluding depreciation and amortization)	110,065	88,877	203,204	176,025
Selling, general and administrative	27,691	26,077	55,464	51,161
Depreciation and amortization	41,356	44,193	84,395	89,905
Long-lived and other asset impairment	4,647	2,960	12,063	10,033
Restructuring charges		743		1,640
Interest expense	24,456	25,958	49,702	57,203
Gain on sale of assets, net	(18,948)	(3,124)	(21,060)	(14,156)
Other income, net	497	(82)	533	(1,971)
Income before income taxes	26,064	10,013	28,728	21,206
Provision for income taxes	9,318	1,261	10,261	8,285
Net income	$ 16,746	$ 8,752	$ 18,467	$ 12,921
Basic net income per common share (in dollars per share)	$ 0.11	$ 0.06	$ 0.12	$ 0.08
Diluted net income per common share (in dollars per share)	$ 0.11	$ 0.06	$ 0.12	$ 0.08
Weighted average common shares outstanding:
Basic (in shares)	153,033	152,033	152,857	151,537
Diluted (in shares)	153,164	152,203	152,982	151,699
Contract Operations
Revenues	$ 166,298	$ 163,865	$ 329,954	$ 329,899
Total cost of sales (excluding depreciation and amortization)	68,355	61,387	132,856	122,752
Aftermarket Services
Revenues	49,530	31,750	83,075	61,147
Total cost of sales (excluding depreciation and amortization)	$ 41,710	$ 27,490	$ 70,348	$ 53,273

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 16,746	$ 8,752	$ 18,467	$ 12,921
Other comprehensive income, net of tax:
Interest rate swap gain, net of reclassifications to earnings		966	574	1,962
Amortization of dedesignated interest rate swap			410
Total other comprehensive income, net of tax		966	984	1,962
Comprehensive income	$ 16,746	$ 9,718	$ 19,451	$ 14,883

XML

Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Treasury Stock, Common	Total
Beginning balance at Dec. 31, 2020	$ 1,600	$ 3,424,624	$ (5,006)	$ (2,401,988)	$ (83,673)	$ 935,557
Stockholders' Equity, Beginning balance (in shares) at Dec. 31, 2020	160,014,960
Treasury stock, common shares, Beginning balance (in shares) at Dec. 31, 2020					(7,052,769)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased					$ (1,746)	(1,746)
Treasury stock purchased (in shares)					(184,776)
Cash dividends				(44,486)		(44,486)
Shares issued under ESPP		371				371
Shares issued under ESPP (in shares)	44,116
Stock-based compensation, net of forfeitures	$ 9	5,832				5,841
Stock-based compensation, net of forfeitures (in shares)	923,330				(40,904)
Net proceeds from issuance of common stock	$ 4	3,397				3,401
Net proceeds from issuance of common stock (in shares)	357,148
Comprehensive income (loss)
Net income				12,921		12,921
Interest rate swap gain, net of reclassifications to earnings			1,962			1,962
Ending balance at Jun. 30, 2021	$ 1,613	3,434,224	(3,044)	(2,433,553)	$ (85,419)	913,821
Stockholders' Equity, Ending balance (in shares) at Jun. 30, 2021	161,339,554
Treasury stock, common shares, Ending balance (in shares) at Jun. 30, 2021					(7,278,449)
Beginning balance at Mar. 31, 2021	$ 1,613	3,430,910	(4,010)	(2,419,974)	$ (85,415)	923,124
Stockholders' Equity, Beginning balance (in shares) at Mar. 31, 2021	161,323,492
Treasury stock, common shares, Beginning balance (in shares) at Mar. 31, 2021					(7,263,173)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased					$ (4)	(4)
Treasury stock purchased (in shares)					(383)
Cash dividends				(22,331)		(22,331)
Shares issued under ESPP		136				136
Shares issued under ESPP (in shares)	16,062
Stock-based compensation, net of forfeitures		3,178				3,178
Stock-based compensation, net of forfeitures (in shares)					(14,893)
Comprehensive income (loss)
Net income				8,752		8,752
Interest rate swap gain, net of reclassifications to earnings			966			966
Ending balance at Jun. 30, 2021	$ 1,613	3,434,224	(3,044)	(2,433,553)	$ (85,419)	913,821
Stockholders' Equity, Ending balance (in shares) at Jun. 30, 2021	161,339,554
Treasury stock, common shares, Ending balance (in shares) at Jun. 30, 2021					(7,278,449)
Beginning balance at Dec. 31, 2021	$ 1,615	3,440,059	(984)	(2,463,114)	$ (86,138)	$ 891,438
Stockholders' Equity, Beginning balance (in shares) at Dec. 31, 2021	161,482,852
Treasury stock, common shares, Beginning balance (in shares) at Dec. 31, 2021					(7,417,401)	7,417,401
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased					$ (2,366)	$ (2,366)
Treasury stock purchased (in shares)					(272,706)
Cash dividends				(45,167)		(45,167)
Shares issued under ESPP		295				295
Shares issued under ESPP (in shares)	38,846
Stock-based compensation, net of forfeitures	$ 14	6,023				6,037
Stock-based compensation, net of forfeitures (in shares)	1,416,672				(50,812)
Net proceeds from issuance of common stock	$ 4	4,226				4,230
Net proceeds from issuance of common stock (in shares)	447,020
Comprehensive income (loss)
Net income				18,467		18,467
Interest rate swap gain, net of reclassifications to earnings			574			574
Amortization of dedesignated interest rate swap			$ 410			410
Ending balance at Jun. 30, 2022	$ 1,633	3,450,603		(2,489,814)	$ (88,504)	$ 873,918
Stockholders' Equity, Ending balance (in shares) at Jun. 30, 2022	163,385,390
Treasury stock, common shares, Ending balance (in shares) at Jun. 30, 2022					(7,740,919)	7,740,919
Beginning balance at Mar. 31, 2022	$ 1,629	3,443,261		(2,484,066)	$ (88,501)	$ 872,323
Stockholders' Equity, Beginning balance (in shares) at Mar. 31, 2022	162,919,584
Treasury stock, common shares, Beginning balance (in shares) at Mar. 31, 2022					(7,698,812)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased					$ (3)	(3)
Treasury stock purchased (in shares)					(303)
Cash dividends				(22,494)		(22,494)
Shares issued under ESPP		146				146
Shares issued under ESPP (in shares)	18,786
Stock-based compensation, net of forfeitures		2,970				2,970
Stock-based compensation, net of forfeitures (in shares)					(41,804)
Net proceeds from issuance of common stock	$ 4	4,226				4,230
Net proceeds from issuance of common stock (in shares)	447,020
Comprehensive income (loss)
Net income				16,746		16,746
Ending balance at Jun. 30, 2022	$ 1,633	$ 3,450,603		$ (2,489,814)	$ (88,504)	$ 873,918
Stockholders' Equity, Ending balance (in shares) at Jun. 30, 2022	163,385,390
Treasury stock, common shares, Ending balance (in shares) at Jun. 30, 2022					(7,740,919)	7,740,919

XML

Condensed Consolidated Statements of Equity (Parentheticals) - $ / shares	3 Months Ended						6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statements of Equityy
Dividend declared per common stock (in dollars per share)	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.290	$ 0.290

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 18,467	$ 12,921
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	84,395	89,905
Long-lived and other asset impairment	12,063	10,033
Inventory write-downs	721	511
Amortization of operating lease ROU assets	1,575	1,891
Amortization of deferred financing costs	2,576	7,551
Amortization of debt premium	(1,003)	(1,003)
Amortization of dedesignated interest rate swap	410
Interest rate swaps	631	2,169
Stock-based compensation expense	6,037	5,841
Provision for credit losses	365	(215)
Gain on sale of assets, net	(4,344)	(8,161)
Gain on sale of business	(16,716)	(5,995)
Deferred income tax provision	9,473	7,995
Amortization of contract costs	9,249	10,752
Deferred revenue recognized in earnings	(11,541)	(5,048)
Change in assets and liabilities:
Accounts receivable, trade	(30,370)	(2,661)
Inventory	(5,779)	(3,569)
Other assets	(1,182)	(244)
Contract costs, net	(13,007)	(6,467)
Accounts payable and other liabilities	13,051	6,358
Deferred revenue	14,032	4,068
Other	421	(15)
Net cash provided by operating activities	89,524	126,617
Cash flows from investing activities:
Capital expenditures	(106,066)	(38,749)
Proceeds from sale of business	55,523	18,795
Proceeds from sale of property, plant and equipment and other assets	9,728	18,178
Proceeds from insurance and other settlements	2,781	910
Investments in unconsolidated entities	(8,000)
Net cash (used in) investing activities	(46,034)	(866)
Cash flows from financing activities:
Borrowings of long-term debt	405,733	343,251
Repayments of long-term debt	(404,500)	(419,751)
Payments for debt issuance costs		(2,407)
Payments for settlement of interest rate swaps that include financing elements	(1,334)	(2,169)
Dividends paid to stockholders	(45,167)	(44,486)
Net proceeds from issuance of common stock	4,230	3,401
Proceeds from stock issued under ESPP	295	371
Purchases of treasury stock	(2,366)	(1,746)
Net cash used in financing activities	(43,109)	(123,536)
Net increase in cash and cash equivalents	381	2,215
Cash and cash equivalents, beginning of period	1,569	1,097
Cash and cash equivalents, end of period	$ 1,950	$ 3,312

XML

Description of Business and Basis of Presentation

6 Months Ended

Jun. 30, 2022

Description of Business and Basis of Presentation

Description of Business and Basis of Presentation

1. Description of Business and Basis of Presentation

We are an energy infrastructure company with a primary focus on midstream natural gas compression. We are the leading provider of natural gas compression services to customers in the energy industry throughout the U.S. and a leading supplier of aftermarket services to customers that own compression equipment in the U.S. We operate in two business segments: contract operations and aftermarket services. Our predominant segment, contract operations, primarily includes designing, sourcing, owning, installing, operating, servicing, repairing and maintaining our owned fleet of natural gas compression equipment to provide natural gas compression services to our customers. In our aftermarket services business, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with GAAP and the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP are not required in these interim financial statements and have been condensed or omitted. Management believes that the information furnished reflects all normal recurring adjustments necessary to fairly present our consolidated financial position, results of operations and cash flows for the periods indicated. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements presented in our 2021 Form 10-K, which contains a more comprehensive summary of our accounting policies. The interim results reported herein are not necessarily indicative of results for a full year.

XML

Business Transactions

6 Months Ended

Jun. 30, 2022

Business Transactions

Business Transactions

2. Business Transactions

May 2022 Disposition

In May 2022, we completed the sale of certain contract operations customer service agreements and approximately 380 compressors, comprising approximately 70,000 horsepower, used to provide compression services under those agreements, as well as other assets used to support the operations. We allocated customer-related and contract-based intangible assets based on a ratio of the horsepower sold relative to the total horsepower of the asset group. We received cash consideration of $55.5 million for the sale and recorded a gain on the sale of $16.7 million in gain on sale of assets, net in our condensed consolidated statements of operations during the three and six months ended June 30, 2022.

February 2021 Disposition

In February 2021, we completed the sale of certain contract operations customer service agreements and approximately 300 compressors, comprising approximately 40,000 horsepower, used to provide compression services under those agreements as well as other assets used to support the operations. We allocated customer-related and contract-based intangible assets based on a ratio of the horsepower sold relative to the total horsepower of the asset group. We recorded a gain on the sale of $6.0 million in gain on sale of assets, net in our condensed consolidated statements of operations during the six months ended June 30, 2021.

XML

Inventory

6 Months Ended

Jun. 30, 2022

Inventory

Inventory

3. Inventory

(in thousands)	June 30, 2022		December 31, 2021
Parts and supplies	$	61,571	$	63,628
Work in progress		16,065		9,241
Inventory	$	77,636	$	72,869

XML

Property, Plant and Equipment, Net

6 Months Ended

Jun. 30, 2022

Property, Plant and Equipment, net

Property, Plant and Equipment, Net

4. Property, Plant and Equipment, net

(in thousands)	June 30, 2022		December 31, 2021
Compression equipment, facilities and other fleet assets	$	3,259,841	$	3,273,770
Land and buildings		44,205		43,540
Transportation and shop equipment		89,866		92,490
Computer hardware and software		77,393		76,908
Other		6,250		6,229
Property, plant and equipment		3,477,555		3,492,937
Accumulated depreciation		(1,265,811)		(1,266,411)
Property, plant and equipment, net	$	2,211,744	$	2,226,526

XML

Equity Investments

6 Months Ended

Jun. 30, 2022

Equity Investments

Equity Investments

5. Equity Investments

Investments in which we are deemed to exert significant influence, but not control, are accounted for using the equity method of accounting, except in cases where the fair value option is elected. For such investments where we have elected the fair value option, the election is irrevocable and is applied on an investment-by-investment basis at initial recognition. In April 2022, we agreed to acquire for cash a 25% equity interest in ECOTEC, a company specializing in methane emissions monitoring and management. We have elected the fair value option to account for this investment. As of June 30, 2022, our ownership interest in ECOTEC was 14%, which was included in other assets in our condensed consolidated balance sheets. Changes in the fair value of this investment are recognized in other (income) expense, net in our condensed consolidated statements of operations.

XML

Hosting Arrangements

6 Months Ended

Jun. 30, 2022

Hosting Arrangements

Hosting Arrangements

6. Hosting Arrangements

We have hosting arrangements that are service contracts related to the cloud migration of our ERP system and cloud services for our mobile workforce, telematics and inventory management tools.

As of June 30, 2022 and December 31, 2021, we had $14.8 million and $12.7 million, respectively, of capitalized implementation costs related to these hosting arrangements included in other assets in our condensed consolidated balance sheets. Accumulated amortization was $1.6 million and $0.7 million at June 30, 2022 and December 31, 2021, respectively. We recorded $0.5 million and $0.1 million of amortization expense to SG&A in our condensed consolidated statements of operations during the three months ended June 30, 2022 and 2021, respectively, and $0.9 million and $0.2 million during the six months ended June 30, 2022 and 2021, respectively.

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Long-Term Debt

6 Months Ended

Jun. 30, 2022

Long-Term Debt

Long-Term Debt

7. Long-Term Debt

(in thousands)	June 30, 2022		December 31, 2021
Credit Facility	$	235,733	$	234,500
2028 Notes
Principal		800,000		800,000
Premium, net of amortization		11,533		12,536
Deferred financing costs, net of amortization		(9,574)		(10,406)
		801,959		802,130
2027 Notes
Principal		500,000		500,000
Deferred financing costs, net of amortization		(5,254)		(5,805)
		494,746		494,195
Long-term debt	$	1,532,438	$	1,530,825

Credit Facility

As of June 30, 2022, there were $5.8 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.3%. The weighted average annual interest rate on the outstanding balance under the Credit Facility, excluding the effect of interest rate swaps, was 3.9% and 2.6% at June 30, 2022 and December 31, 2021, respectively. We incurred $0.5 million and $0.4 million in commitment fees on the daily unused amount of the Credit Facility during the three months ended June 30, 2022 and 2021, respectively, and $1.0 million during each of the six months ended June 30, 2022 and 2021.

As of June 30, 2022, we were in compliance with all covenants under our Credit Facility agreement. As a result of the facility’s financial ratio requirements, $476.6 million of the $508.5 million of undrawn capacity was available for additional borrowings as of June 30, 2022.

In February 2021, we amended our Credit Facility to, among other things, reduce the aggregate revolving commitment from $1.25 billion to $750.0 million and adjust certain financial ratios. We wrote off $4.9 million of unamortized deferred financing costs as a result of the amendment, which was recorded to interest expense in our condensed consolidated statements of operations during the six months ended June 30, 2021.

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Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2022

Accumulated Other Comprehensive Loss.

Accumulated Other Comprehensive Loss

8. Accumulated Other Comprehensive Loss

Components of comprehensive income (loss) are net income (loss) and all changes in equity during a period except those resulting from transactions with owners. Our accumulated other comprehensive loss consists of changes in the fair value of our interest rate swap derivative instruments, net of tax.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Beginning accumulated other comprehensive loss	$	—	$	(4,010)	$	(984)	$	(5,006)
Other comprehensive income, net of tax:
Loss recognized in other comprehensive income, net of tax benefit of $0, $16, $107 and $18, respectively		—		(63)		(405)		(71)
Loss reclassified from accumulated other comprehensive loss to interest expense, net of tax benefit of $0, $273, $369 and $540, respectively		—		1,029		1,389		2,033
Total other comprehensive income		—		966		984		1,962
Ending accumulated other comprehensive loss	$	—	$	(3,044)	$	—	$	(3,044)

See Note 15 (“Derivatives”) for further details on our interest rate swap derivative instruments.

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Equity

6 Months Ended

Jun. 30, 2022

Equity

Equity

9. Equity

At-the-Market Continuous Equity Offering Program

During the three and six months ended June 30, 2022, we sold 447,020 shares of common stock for net proceeds of $4.2 million pursuant to our ATM agreement.

During the six months ended June 30, 2021, we sold 357,148 shares of common stock under the program for net proceeds of $3.4 million.

Cash Dividends

The following table summarizes our dividends declared and paid in each of the quarterly periods of 2022 and 2021:

	Declared Dividends		Dividends Paid
	per Common Share		(in thousands)
2022
Q2	$	0.145	$	22,494
Q1		0.145		22,673
2021
Q4	$	0.145	$	22,351
Q3		0.145		22,506
Q2		0.145		22,331
Q1		0.145		22,155

On July 28, 2022, our Board of Directors declared a quarterly dividend of $0.145 per share of common stock to be paid on August 16, 2022 to stockholders of record at the close of business on August 9, 2022.

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Revenue from Contract with Customers

6 Months Ended

Jun. 30, 2022

Revenue from Contract with Customers

Revenue from Contracts with Customers

10. Revenue from Contracts with Customers

The following table presents our revenue from contracts with customers by segment (see Note 20 (“Segments”)) and disaggregated by revenue source:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Contract operations:
0 ― 1,000 horsepower per unit	$	40,489	$	45,918	$	82,331	$	92,837
1,001 ― 1,500 horsepower per unit		68,697		66,852		135,698		135,316
Over 1,500 horsepower per unit		56,885		50,939		111,479		101,342
Other (1)		227		156		446		404
Total contract operations revenue (2)		166,298		163,865		329,954		329,899
Aftermarket services:
Services		26,001		17,008		43,138		33,900
OTC parts and components sales		23,529		14,742		39,937		27,247
Total aftermarket services revenue (3)		49,530		31,750		83,075		61,147
Total revenue	$	215,828	$	195,615	$	413,029	$	391,046

(1) Primarily relates to fees associated with owned non-compression equipment.

(2) Includes $0.9 million and $1.4 million for the three months ended June 30, 2022 and 2021, respectively, and $1.1 million and $2.4 million for the six months ended June 30, 2022 and 2021, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time.

(3) Services revenue within aftermarket services is recognized over time. OTC parts and components sales revenue is recognized at a point in time.

Performance Obligations

As of June 30, 2022, we had $286.6 million of remaining performance obligations related to our contract operations segment, which will be recognized through 2027 as follows:

(in thousands)	2022		2023		2024		2025		2026		2027		Total
Remaining performance obligations	$	156,370	$	93,290	$	31,041	$	4,819	$	914	$	190	$	286,624

We do not disclose the aggregate transaction price for the remaining performance obligations for aftermarket services as there are no contracts with customers with an original contract term that is greater than one year.

Contract Assets and Liabilities

Contract Assets

As of June 30, 2022 and December 31, 2021, our receivables from contracts with customers, net of allowance for credit losses, were $121.0 million and $84.7 million, respectively.

Allowance for Credit Losses

Trade accounts receivable are due from companies of varying size engaged principally in oil and natural gas activities throughout the U.S. We review the financial condition of customers prior to extending credit and generally do not obtain collateral for trade receivables. Payment terms are on a short-term basis and in accordance with industry practice. We consider this credit risk to be limited due to these companies’ financial resources, the nature of the products and services we provide and the terms of our customer agreements.

Due to the short-term nature of our trade receivables, we consider the amortized cost to be the same as the carrying amount of the receivable, excluding the allowance for credit losses. We recognize an allowance for credit losses when a receivable is recorded, even when the risk of loss is remote. We utilize an aging schedule to determine our allowance for credit losses and measure expected credit losses on a collective (pool) basis when similar risk characteristics exist. We rely primarily on ratings assigned by external rating agencies and credit monitoring services to assess credit risk and aggregate customers first by low, medium or high risk asset pools, and then by delinquency status. We also consider the internal risk associated with geographic location and the services we provide to the customer when determining asset pools. If a customer does not share similar risk characteristics with other customers, we evaluate the customer’s outstanding trade receivables for expected credit losses on an individual basis. Trade receivables evaluated individually are not included in our collective assessment. Each reporting period, we reassess our customers’ risk profiles and determine the appropriate asset pool classification, or perform individual assessments of expected credit losses, based on the customers’ risk characteristics at the reporting date.

The contractual life of our trade receivables is primarily 30 days based on the payment terms specified in the contract. Contract operations services are generally billed monthly at the beginning of the month in which service is being provided. Aftermarket services billings typically occur when parts are delivered or service is completed. Loss rates are separately determined for each asset pool based on the length of time a trade receivable has been outstanding. We analyze two years of internal historical loss data, including the effects of prepayments, write-offs and subsequent recoveries, to determine our historical loss experience. Our historical loss information is a relevant data point for estimating credit losses, as the data closely aligns with trade receivables due from our customers. Ratings assigned by external rating agencies and credit monitoring services consider past performance and forecasts of future economic conditions in assessing credit risk. We routinely update our historical loss data to reflect our customers’ current risk profile, to ensure the historical data and loss rates are relevant to the pool of assets for which we are estimating expected credit losses.

Our allowance for credit losses balance changed as follows during the six months ended June 30, 2022:

(in thousands)
Balance at December 31, 2021	$	2,152
Provision for credit losses		365
Write-offs charged against allowance		(218)
Balance at June 30, 2022	$	2,299

Contract Liabilities

Freight billings to customers for the transport of compression assets, customer-specified modifications of compression assets and milestone billings on aftermarket services often result in a contract liability. Our contract liabilities were $6.9 million and $4.4 million as of June 30, 2022 and December 31, 2021, respectively, and were included in deferred revenue and other liabilities in our condensed consolidated balance sheets. During the six months ended June 30, 2022, we deferred revenue of $14.0 million and recognized $11.5 million as revenue. The revenue recognized and deferred during the period primarily related to freight billings and milestone billings on aftermarket services.

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Long-Lived and Other Asset Impairment

6 Months Ended

Jun. 30, 2022

Long-Lived and Other Asset Impairment

Long-Lived and Other Asset Impairment

11. Long-Lived and Other Asset Impairment

We review long-lived assets, including property, plant and equipment and identifiable intangibles that are being amortized, for impairment whenever events or changes in circumstances, including the removal of compressors from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

Compression Fleet

We periodically review the future deployment of our idle compression assets for units that are not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. Based on these reviews, we determine that certain idle compressors should be retired from the active fleet. The retirement of these units from the active fleet triggers a review of these assets for impairment and as a result of our review, we may record an asset impairment to reduce the book value of each unit to its estimated fair value. The fair value of each unit is estimated based on the expected net sale proceeds compared to other fleet units we recently sold, a review of other units recently offered for sale by third parties or the estimated component value of the equipment we plan to use.

In connection with our review of our idle compression assets, we evaluate for impairment idle units that were culled from our fleet in prior years and are available for sale. Based on that review, we may reduce the expected proceeds from disposition and record additional impairment to reduce the book value of each unit to its estimated fair value.

The following table presents the results of our compression fleet impairment review as recorded to our contract operations segment:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(dollars in thousands)	2022		2021		2022		2021
Idle compressors retired from the active fleet		30		45		75		115
Horsepower of idle compressors retired from the active fleet		26,000		13,000		57,000		37,000
Impairment recorded on idle compressors retired from the active fleet	$	4,647	$	2,832	$	12,056	$	9,844

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Restructuring Charges

6 Months Ended

Jun. 30, 2022

Restructuring Charges

Restructuring Charges

12. Restructuring Charges

In response to the decreased activity level of our customers that resulted from the coronavirus pandemic beginning in the second quarter of 2020, we incurred severance costs totaling $7.0 million to right-size our business in 2020 and 2021. No additional costs will be incurred under this restructuring plan.

During the third quarter of 2020, a plan to dispose of certain non-core properties was approved by management. We incurred $1.5 million of costs in 2020 and 2021 as a result of these property disposals. No additional costs will be incurred under this restructuring plan.

The severance and property disposal costs incurred under the above restructuring plans were recorded to restructuring charges in our condensed consolidated statements of operations.

The following table presents restructuring charges incurred by segment:

	Contract		Aftermarket
(in thousands)	Operations		Services		Other (1)		Total
Three months ended June 30, 2021
Pandemic restructuring	$	337	$	121	$	147	$	605
2020 property restructuring		—		—		7		7
Other restructuring		—		—		131		131
Total restructuring charges	$	337	$	121	$	285	$	743
Six months ended June 30, 2021
Pandemic restructuring	$	616	$	145	$	732	$	1,493
2020 property restructuring		—		—		16		16
Other restructuring		—		—		131		131
Total restructuring charges	$	616	$	145	$	879	$	1,640

(1) Represents expense incurred within our corporate function and not directly attributable to our segments.

The following table presents restructuring charges incurred by cost type:

	Three Months Ended		Six Months Ended
(in thousands)	June 30, 2021		June 30, 2021
Severance costs	$	605	$	1,493
Property disposal costs
Impairment		—		9
Other exit costs		7		7
Total property disposal costs		7		16
Other restructuring costs		131		131
Total restructuring charges	$	743	$	1,640

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Income Taxes

6 Months Ended

Jun. 30, 2022

Income Taxes

Income Taxes

13. Income Taxes

Valuation Allowance

The amount of our deferred tax assets considered realizable could be adjusted if projections of future taxable income are reduced or objective negative evidence in the form of a three-year cumulative loss is present or both. Should we no longer have a level of sustained profitability, excluding nonrecurring charges, we will have to rely more on our future projections of taxable income to determine if we have an adequate source of taxable income for the realization of our deferred tax assets, namely net operating loss, interest limitation and tax credit carryforwards. This may result in the need to record a valuation allowance against all or a portion of our deferred tax assets.

Effective Tax Rate

The year-to-date effective tax rate for the six months ended June 30, 2022 differed significantly from our statutory rate primarily due to unrecognized tax benefits and the limitation on executive compensation.

Unrecognized Tax Benefits

As of June 30, 2022, we believe it is reasonably possible that $2.7 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to June 30, 2023 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities that could materially differ from this estimate.

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Earnings Per Share

6 Months Ended

Jun. 30, 2022

Earnings Per Share

Earnings Per Share

14. Earnings per Share

Basic net income (loss) per common share is computed using the two-class method, which is an earnings allocation formula that determines net income (loss) per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. Under the two-class method, basic net income (loss) per common share is determined by dividing net income (loss), after deducting amounts allocated to participating securities, by the weighted average number of common shares outstanding for the period. Participating securities include unvested restricted stock and stock-settled restricted stock units that have nonforfeitable rights to receive dividends or dividend equivalents, whether paid or unpaid. During periods of net loss, only distributed earnings (dividends) are allocated to participating securities, as participating securities do not have a contractual obligation to participate in our undistributed losses.

Diluted net income (loss) per common share is computed using the weighted average number of shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding options, performance-based restricted stock units and stock to be issued pursuant to our ESPP unless their effect would be anti-dilutive.

The following table shows the calculation for net income attributable to common stockholders, which is used in the calculation of basic and diluted net income per common share:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Less: Earnings attributable to participating securities		(305)		(285)		(819)		(454)
Net income attributable to common stockholders	$	16,441	$	8,467	$	17,648	$	12,467

The following table shows the potential shares of common stock that were included in computing diluted net income per common share:

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
Weighted average common shares outstanding including participating securities	155,188	154,047	155,005	153,334
Less: Weighted average participating securities outstanding	(2,155)	(2,014)	(2,148)	(1,797)
Weighted average common shares outstanding used in basic net income per common share	153,033	152,033	152,857	151,537
Net dilutive potential common shares issuable:
On vesting of restricted stock units	128	169	123	159
On settlement of ESPP shares	3	1	2	3
Weighted average common shares outstanding used in diluted net income per common share	153,164	152,203	152,982	151,699

The following table shows the potential shares of common stock issuable that were excluded from computing diluted net income per common share as their inclusion would have been anti-dilutive:

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
On exercise of options where exercise price is greater than average market value for the period	—	22	—	33

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Derivatives

6 Months Ended

Jun. 30, 2022

Derivatives

Derivatives

15. Derivatives

We are exposed to market risks associated with changes in the variable interest rate of our Credit Facility. We have used derivative instruments, in the form of interest rate swaps, to manage our exposure to fluctuations in this variable interest rate and thereby minimize the risks and costs associated with financial activities. We do not use derivative instruments for trading or other speculative purposes.

In March 2022, our $300.0 million notional value of interest rate swaps expired. We previously entered into these swaps to offset changes in expected cash flows due to fluctuations in the associated variable interest rates and designated them as cash flow hedges. There was no nonperformance by any counterparty during the terms of the interest rate swaps and no collateral was posted for the instruments.

Prior to expiration, during the third quarter of 2021, we dedesignated $125.0 million notional value of our interest rate swaps. The fair value of this interest rate swap immediately prior to dedesignation was a liability of $1.6 million. The associated amount in accumulated other comprehensive loss related to this interest rate swap was amortized into interest expense over the remaining term of the swap through March 2022. Changes in the fair value of the dedesignated interest rate swap after dedesignation and prior to expiration were recorded in interest expense.

The remaining $175.0 million notional value of our interest rate swaps were designated as (highly effective) cash flow hedging instruments until their expiration. Changes in the fair value of cash flow hedging instruments are recognized as a component of other comprehensive income (loss) until the hedged transaction affects earnings. At that time, amounts are reclassified into earnings to interest expense, the same statement of operations line item to which the earnings effect of the hedged item is recorded. Cash flows from derivatives designated as hedges are classified in our condensed consolidated statements of cash flows under the same category as the cash flows from the underlying assets, liabilities or anticipated transactions unless the derivative contract contains a significant financing element, in which case, the cash settlements for those derivatives are classified as cash flows from financing activities.

The following table presents the effect of our derivative instruments on our condensed consolidated balance sheets:

(in thousands)	June 30, 2022		December 31, 2021
Interest rate swaps designated as cash flow hedging instruments
Accrued liabilities	$	—	$	727
Interest rate swaps not designated as hedging instruments
Accrued liabilities		—		523
Total derivative liabilities	$	—	$	1,250

The following table presents the effect of our derivative instruments on our condensed consolidated statements of operations:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	$	24,456	$	25,958	$	49,702	$	57,203
Interest rate swaps designated as cash flow hedging instruments
Pre-tax loss recognized in other comprehensive income	$	—	$	(79)	$	(512)	$	(89)
Pre-tax loss reclassified from accumulated other comprehensive loss into interest expense		—		(1,302)		(1,758)		(2,573)
Interest rate swaps not designated as hedging instruments
Gain recognized in interest expense	$	—	$	—	$	523	$	—

See Note 8 (“Accumulated Other Comprehensive Loss”) and Note 16 (“Fair Value Measurements”) for further details on our derivative instruments.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2022

Fair Value Measurements

Fair Value Measurements

16. Fair Value Measurements

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Investment in ECOTEC

During the three months ended June 30, 2022, we acquired a 14% equity interest in ECOTEC. To provide for greater transparency, we elected the fair value option to account for this investment. The fair value is internally calculated using a market approach and is classified as a Level 3 measurement. At June 30, 2022, the fair value of our equity interest in ECOTEC was as follows:

(in thousands)	June 30, 2022
Investment in ECOTEC	$	8,000

Interest Rate Swaps

Prior to their expiration in the first quarter of 2022, our interest rate swap derivative instruments were valued quarterly based on the income approach (discounted cash flow) using market observable inputs, including LIBOR forward curves. These fair value measurements were classified as Level 2. The following table presents our derivative position measured at fair value on a recurring basis, with pricing levels as of the date of valuation:

(in thousands)	June 30, 2022		December 31, 2021
Derivative liabilities	$	—	$	1,250

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2022, we recorded nonrecurring fair value measurements related to our idle compressors. Our estimate of the compressors’ fair value was primarily based on the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use. We discounted the expected proceeds, net of selling and other carrying costs, using a weighted average disposal period of four years. These fair value measurements are classified as Level 3. The fair value of our compressors impaired during 2022 and 2021 was as follows:  

(in thousands)	June 30, 2022		December 31, 2021
Impaired compressors	$	1,010	$	4,380

The significant unobservable inputs used to develop the above fair value measurements were weighted by the relative fair value of the compressors being measured. Additional quantitative information related to our significant unobservable inputs follows:

	Range	Weighted Average (1)
Estimated net sale proceeds:
As of June 30, 2022	$0 - $621 per horsepower	$41 per horsepower
As of December 31, 2021	$0 - $621 per horsepower	$35 per horsepower

(1) Calculated based on an estimated discount for market liquidity of 57% and 64% as of June 30, 2022 and December 31, 2021, respectively.

See Note 11 (“Long-Lived and Other Asset Impairment”) for further details.

Other Financial Instruments

The carrying amounts of our cash, receivables and payables approximate fair value due to the short-term nature of those instruments.

The carrying amount of borrowings outstanding under our Credit Facility approximates fair value due to its variable interest rate. The fair value of these outstanding borrowings is a Level 3 measurement.

The fair value of our fixed rate debt is estimated using yields observable in active markets, which are Level 2 inputs, and was as follows:

(in thousands)	June 30, 2022		December 31, 2021
Carrying amount of fixed rate debt (1)	$	1,296,705	$	1,296,325
Fair value of fixed rate debt		1,161,000		1,361,000

(1) Carrying amounts are shown net of unamortized premium and deferred financing costs. See Note 7 (“Long-Term Debt”).

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2022

Stock-Based Compensation

Stock-Based Compensation

17. Stock-Based Compensation

We recognize stock-based compensation expense related to restricted stock awards, restricted stock units, performance-based restricted stock units and shares issued under our ESPP.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Equity award expense	$	2,970	$	3,178	$	6,037	$	5,841
Liability award expense		377		408		880		994
Total stock-based compensation expense	$	3,347	$	3,586	$	6,917	$	6,835

The following table presents our restricted stock activity during the six months ended June 30, 2022:

		Weighted
		Average
		Grant Date
	Shares	Fair Value
	(in thousands)	Per Share
Non-vested restricted stock, December 31, 2021	2,578	$	10.35
Granted	1,861		9.03
Vested	(1,106)		10.31
Canceled	(188)		9.35
Non-vested restricted stock, June 30, 2022 (1)	3,145		9.64

(1) Comprised of 508 cash-settled units and 2,637 stock-settled awards and units.

As of June 30, 2022, we expect $21.3 million of unrecognized compensation cost related to our non-vested awards and units to be recognized over the weighted average period of 2.1 years.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2022

Commitments and Contingencies

Commitments and Contingencies

18. Commitments and Contingencies

Insurance Matters

Our business can be hazardous, involving unforeseen circumstances such as uncontrollable flows of natural gas or well fluids and fires or explosions. As is customary in our industry, we review our safety equipment and procedures and carry insurance against some, but not all, risks of our business. Our insurance coverage includes property damage, general liability and commercial automobile liability and other coverage we believe is appropriate. We believe that our insurance coverage is customary for the industry and adequate for our business, however, losses and liabilities not covered by insurance would increase our costs.

Additionally, we are substantially self-insured for workers’ compensation and employee group health claims in view of the relatively high per-incident deductibles we absorb under our insurance arrangements for these risks. Losses up to the deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages. We are also self-insured for property damage to our offshore assets.

Tax Matters

We are subject to a number of state and local taxes that are not income-based. As many of these taxes are subject to audit by the taxing authorities, it is possible that an audit could result in additional taxes due. We accrue for such additional taxes when we determine that it is probable that we have incurred a liability and we can reasonably estimate the amount of the liability. As of June 30, 2022 and December 31, 2021, we had $3.9 million and $5.8 million, respectively, accrued for the outcomes of non-income-based tax audits. We do not expect that the ultimate resolutions of these audits will result in a material variance from the amounts accrued. We do not accrue for unasserted claims for tax audits unless we believe the assertion of a claim is probable, it is probable that it will be determined that the claim is owed and we can reasonably estimate the claim or range of the claim. We believe the likelihood is remote that the impact of potential unasserted claims from non-income-based tax audits could be material to our consolidated financial position, but it is possible that the resolution of future audits could be material to our consolidated results of operations or cash flows.

In 2021, one of our sales and use tax audits advanced from the audit review phase to the contested hearing phase. We had $0.6 million accrued for this audit as of both June 30, 2022 and December 31, 2021.

Litigation and Claims

In the ordinary course of business, we are involved in various pending or threatened legal actions. While we are unable to predict the ultimate outcome of these actions, we believe that any ultimate liability arising from any of these actions will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends. However, because of the inherent uncertainty of litigation and arbitration proceedings, we cannot provide assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends.

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Related Party Transactions

6 Months Ended

Jun. 30, 2022

Related Party Transactions

Related Party Transactions

19. Related Party Transactions

Old Ocean Reserves, an affiliate of our customer Hilcorp, has the right to designate one director to serve on our Board of Directors as long as Old Ocean Reserves or its successors (together with its affiliates) owns at least 7.5% of our outstanding common stock. As of June 30, 2022, Old Ocean Reserves owned 10.7% of our outstanding common stock. Jason C. Rebrook, Chief Executive Officer and Director of Harvest Midstream Company, a Hilcorp affiliate, has served as Old Ocean Reserves’ representative director since July 2020.

Revenue from Hilcorp and affiliates was $9.2 million and $9.6 million during the three months ended June 30, 2022 and 2021, respectively, and $18.6 million and $19.1 million during the six months ended June 30, 2022 and 2021, respectively. Accounts receivable, net due from Hilcorp and affiliates was $4.3 million and $3.7 million as of June 30, 2022 and December 31, 2021, respectively.

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Segments

6 Months Ended

Jun. 30, 2022

Segments

Segments

20. Segments

We manage our business segments primarily based on the type of product or service provided. We have two segments which we operate within the U.S.: contract operations and aftermarket services. The contract operations segment primarily provides natural gas compression services to meet specific customer requirements. The aftermarket services segment provides a full range of services to support the compression needs of customers, from parts sales and normal maintenance services to full operation of a customer’s owned assets.

We evaluate the performance of our segments based on gross margin for each segment. Revenue includes only sales to external customers.

	Contract		Aftermarket
(in thousands)	Operations		Services		Total
Three months ended June 30, 2022
Revenue	$	166,298	$	49,530	$	215,828
Gross margin		97,943		7,820		105,763
Three months ended June 30, 2021
Revenue	$	163,865	$	31,750	$	195,615
Gross margin		102,478		4,260		106,738
Six months ended June 30, 2022
Revenue	$	329,954	$	83,075	$	413,029
Gross margin		197,098		12,727		209,825
Six months ended June 30, 2021
Revenue	$	329,899	$	61,147	$	391,046
Gross margin		207,147		7,874		215,021

The following table reconciles total gross margin to income before income taxes:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total gross margin	$	105,763	$	106,738	$	209,825	$	215,021
Less:
Selling, general and administrative		27,691		26,077		55,464		51,161
Depreciation and amortization		41,356		44,193		84,395		89,905
Long-lived and other asset impairment		4,647		2,960		12,063		10,033
Restructuring charges		—		743		—		1,640
Interest expense		24,456		25,958		49,702		57,203
Gain on sale of assets, net		(18,948)		(3,124)		(21,060)		(14,156)
Other (income) expense, net		497		(82)		533		(1,971)
Income before income taxes	$	26,064	$	10,013	$	28,728	$	21,206

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Impact of Hurricane

6 Months Ended

Jun. 30, 2022

Impact of Hurricane

Impact of Hurricane

21. Impact of Hurricane

In August 2021, Hurricane Ida caused operational disruptions, damage to compressors and a temporary shutdown of facilities in Louisiana that negatively impacted our financial performance in the quarter. At December 31, 2021, we had an insurance recovery receivable of $2.8 million related to the facility and compressor damages, which we received in cash in the first quarter of 2022. The remaining portion of our insurance claim pertaining to business interruption is in process. Any amount recovered will not be subject to an additional deductible and will be recognized upon notice of final settlement.

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Subsequent Event

6 Months Ended

Jun. 30, 2022

Subsequent Event

Subsequent Events

22. Subsequent Event

On July 1, 2022, we acquired an additional 5% equity interest in ECOTEC, which increased our total ownership interest to 19%.

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Description of Business and Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2022

Description of Business and Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with GAAP and the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP are not required in these interim financial statements and have been condensed or omitted. Management believes that the information furnished reflects all normal recurring adjustments necessary to fairly present our consolidated financial position, results of operations and cash flows for the periods indicated. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements presented in our 2021 Form 10-K, which contains a more comprehensive summary of our accounting policies. The interim results reported herein are not necessarily indicative of results for a full year.

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Inventory (Tables)

6 Months Ended

Jun. 30, 2022

Inventory

Schedule of inventory, net of reserves

(in thousands)	June 30, 2022		December 31, 2021
Parts and supplies	$	61,571	$	63,628
Work in progress		16,065		9,241
Inventory	$	77,636	$	72,869

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Property, Plant and Equipment, Net (Tables)

6 Months Ended

Jun. 30, 2022

Property, Plant and Equipment, net

Schedule of property, plant and equipment, net

(in thousands)	June 30, 2022		December 31, 2021
Compression equipment, facilities and other fleet assets	$	3,259,841	$	3,273,770
Land and buildings		44,205		43,540
Transportation and shop equipment		89,866		92,490
Computer hardware and software		77,393		76,908
Other		6,250		6,229
Property, plant and equipment		3,477,555		3,492,937
Accumulated depreciation		(1,265,811)		(1,266,411)
Property, plant and equipment, net	$	2,211,744	$	2,226,526

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Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2022

Long-Term Debt

Schedule of long-term debt

(in thousands)	June 30, 2022		December 31, 2021
Credit Facility	$	235,733	$	234,500
2028 Notes
Principal		800,000		800,000
Premium, net of amortization		11,533		12,536
Deferred financing costs, net of amortization		(9,574)		(10,406)
		801,959		802,130
2027 Notes
Principal		500,000		500,000
Deferred financing costs, net of amortization		(5,254)		(5,805)
		494,746		494,195
Long-term debt	$	1,532,438	$	1,530,825

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Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2022

Accumulated Other Comprehensive Loss.

Schedule of Accumulated Other Comprehensive Loss

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Beginning accumulated other comprehensive loss	$	—	$	(4,010)	$	(984)	$	(5,006)
Other comprehensive income, net of tax:
Loss recognized in other comprehensive income, net of tax benefit of $0, $16, $107 and $18, respectively		—		(63)		(405)		(71)
Loss reclassified from accumulated other comprehensive loss to interest expense, net of tax benefit of $0, $273, $369 and $540, respectively		—		1,029		1,389		2,033
Total other comprehensive income		—		966		984		1,962
Ending accumulated other comprehensive loss	$	—	$	(3,044)	$	—	$	(3,044)

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Equity (Tables)

6 Months Ended

Jun. 30, 2022

Equity

Summary of entity's dividends per common share

	Declared Dividends		Dividends Paid
	per Common Share		(in thousands)
2022
Q2	$	0.145	$	22,494
Q1		0.145		22,673
2021
Q4	$	0.145	$	22,351
Q3		0.145		22,506
Q2		0.145		22,331
Q1		0.145		22,155

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Revenue from Contract with Customers (Tables)

6 Months Ended

Jun. 30, 2022

Revenue from Contract with Customers

Disaggregation of Revenue

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Contract operations:
0 ― 1,000 horsepower per unit	$	40,489	$	45,918	$	82,331	$	92,837
1,001 ― 1,500 horsepower per unit		68,697		66,852		135,698		135,316
Over 1,500 horsepower per unit		56,885		50,939		111,479		101,342
Other (1)		227		156		446		404
Total contract operations revenue (2)		166,298		163,865		329,954		329,899
Aftermarket services:
Services		26,001		17,008		43,138		33,900
OTC parts and components sales		23,529		14,742		39,937		27,247
Total aftermarket services revenue (3)		49,530		31,750		83,075		61,147
Total revenue	$	215,828	$	195,615	$	413,029	$	391,046

(1) Primarily relates to fees associated with owned non-compression equipment.

(2) Includes $0.9 million and $1.4 million for the three months ended June 30, 2022 and 2021, respectively, and $1.1 million and $2.4 million for the six months ended June 30, 2022 and 2021, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time.

(3) Services revenue within aftermarket services is recognized over time. OTC parts and components sales revenue is recognized at a point in time.

Schedule of remaining Performance Obligation

(in thousands)	2022		2023		2024		2025		2026		2027		Total
Remaining performance obligations	$	156,370	$	93,290	$	31,041	$	4,819	$	914	$	190	$	286,624

Summary of changes in the allowance for credit losses balance

(in thousands)
Balance at December 31, 2021	$	2,152
Provision for credit losses		365
Write-offs charged against allowance		(218)
Balance at June 30, 2022	$	2,299

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Long-Lived and Other Asset Impairment (Tables)

6 Months Ended

Jun. 30, 2022

Long-Lived and Other Asset Impairment

Schedule of impairment of long-lived assets

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(dollars in thousands)	2022		2021		2022		2021
Idle compressors retired from the active fleet		30		45		75		115
Horsepower of idle compressors retired from the active fleet		26,000		13,000		57,000		37,000
Impairment recorded on idle compressors retired from the active fleet	$	4,647	$	2,832	$	12,056	$	9,844

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Restructuring Charges (Tables)

6 Months Ended

Jun. 30, 2022

Restructuring Charges

Schedule of restructuring charges by segment

	Contract		Aftermarket
(in thousands)	Operations		Services		Other (1)		Total
Three months ended June 30, 2021
Pandemic restructuring	$	337	$	121	$	147	$	605
2020 property restructuring		—		—		7		7
Other restructuring		—		—		131		131
Total restructuring charges	$	337	$	121	$	285	$	743
Six months ended June 30, 2021
Pandemic restructuring	$	616	$	145	$	732	$	1,493
2020 property restructuring		—		—		16		16
Other restructuring		—		—		131		131
Total restructuring charges	$	616	$	145	$	879	$	1,640

(1) Represents expense incurred within our corporate function and not directly attributable to our segments.

Schedule of restructuring charges by type

	Three Months Ended		Six Months Ended
(in thousands)	June 30, 2021		June 30, 2021
Severance costs	$	605	$	1,493
Property disposal costs
Impairment		—		9
Other exit costs		7		7
Total property disposal costs		7		16
Other restructuring costs		131		131
Total restructuring charges	$	743	$	1,640

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2022

Earnings Per Share

Summary of net income attributable to Archrock common stockholders used in the calculation of basic and diluted income per common share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Net income	$	16,746	$	8,752	$	18,467	$	12,921
Less: Earnings attributable to participating securities		(305)		(285)		(819)		(454)
Net income attributable to common stockholders	$	16,441	$	8,467	$	17,648	$	12,467

Schedule of potential shares of common stock that were included in computing diluted income attributable to Archrock common stockholders per common share

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
Weighted average common shares outstanding including participating securities	155,188	154,047	155,005	153,334
Less: Weighted average participating securities outstanding	(2,155)	(2,014)	(2,148)	(1,797)
Weighted average common shares outstanding used in basic net income per common share	153,033	152,033	152,857	151,537
Net dilutive potential common shares issuable:
On vesting of restricted stock units	128	169	123	159
On settlement of ESPP shares	3	1	2	3
Weighted average common shares outstanding used in diluted net income per common share	153,164	152,203	152,982	151,699

Schedule of potential shares of common stock issuable, excluded from computing diluted net income, attributable to Archrock common stockholders per common share

	Three Months Ended		Six Months Ended
	June 30,		June 30,
(in thousands)	2022	2021	2022	2021
On exercise of options where exercise price is greater than average market value for the period	—	22	—	33

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2022

Derivatives

Schedule of effect of derivative instruments on consolidated financial position

(in thousands)	June 30, 2022		December 31, 2021
Interest rate swaps designated as cash flow hedging instruments
Accrued liabilities	$	—	$	727
Interest rate swaps not designated as hedging instruments
Accrued liabilities		—		523
Total derivative liabilities	$	—	$	1,250

Schedule of effect of derivative instruments on results of operations

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	$	24,456	$	25,958	$	49,702	$	57,203
Interest rate swaps designated as cash flow hedging instruments
Pre-tax loss recognized in other comprehensive income	$	—	$	(79)	$	(512)	$	(89)
Pre-tax loss reclassified from accumulated other comprehensive loss into interest expense		—		(1,302)		(1,758)		(2,573)
Interest rate swaps not designated as hedging instruments
Gain recognized in interest expense	$	—	$	—	$	523	$	—

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2022

Fair value

Schedule of fair value of equity interest

(in thousands)	June 30, 2022
Investment in ECOTEC	$	8,000

Schedule of fair value of derivative liabilities

(in thousands)	June 30, 2022		December 31, 2021
Derivative liabilities	$	—	$	1,250

Schedule of carrying value and estimated fair value of debt instruments

(in thousands)	June 30, 2022		December 31, 2021
Carrying amount of fixed rate debt (1)	$	1,296,705	$	1,296,325
Fair value of fixed rate debt		1,161,000		1,361,000

(1) Carrying amounts are shown net of unamortized premium and deferred financing costs. See Note 7 (“Long-Term Debt”).

Compressors

Fair value

Schedule of non-recurring fair value assets

(in thousands)	June 30, 2022		December 31, 2021
Impaired compressors	$	1,010	$	4,380

Schedule of significant unobservable inputs

	Range	Weighted Average (1)
Estimated net sale proceeds:
As of June 30, 2022	$0 - $621 per horsepower	$41 per horsepower
As of December 31, 2021	$0 - $621 per horsepower	$35 per horsepower

(1) Calculated based on an estimated discount for market liquidity of 57% and 64% as of June 30, 2022 and December 31, 2021, respectively.

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Stock-Based Compensation

Schedule of allocated stock-based compensation

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Equity award expense	$	2,970	$	3,178	$	6,037	$	5,841
Liability award expense		377		408		880		994
Total stock-based compensation expense	$	3,347	$	3,586	$	6,917	$	6,835

Schedule of restricted stock, restricted stock unit, performance unit, cash settled restricted stock unit and cash settled performance unit activity

		Weighted
		Average
		Grant Date
	Shares	Fair Value
	(in thousands)	Per Share
Non-vested restricted stock, December 31, 2021	2,578	$	10.35
Granted	1,861		9.03
Vested	(1,106)		10.31
Canceled	(188)		9.35
Non-vested restricted stock, June 30, 2022 (1)	3,145		9.64

(1) Comprised of 508 cash-settled units and 2,637 stock-settled awards and units.

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Segments (Tables)

6 Months Ended

Jun. 30, 2022

Segments

Summary of revenue and other financial information by reportable segment

	Contract		Aftermarket
(in thousands)	Operations		Services		Total
Three months ended June 30, 2022
Revenue	$	166,298	$	49,530	$	215,828
Gross margin		97,943		7,820		105,763
Three months ended June 30, 2021
Revenue	$	163,865	$	31,750	$	195,615
Gross margin		102,478		4,260		106,738
Six months ended June 30, 2022
Revenue	$	329,954	$	83,075	$	413,029
Gross margin		197,098		12,727		209,825
Six months ended June 30, 2021
Revenue	$	329,899	$	61,147	$	391,046
Gross margin		207,147		7,874		215,021

Reconciliation of net income (loss) to gross margin

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2022		2021		2022		2021
Total gross margin	$	105,763	$	106,738	$	209,825	$	215,021
Less:
Selling, general and administrative		27,691		26,077		55,464		51,161
Depreciation and amortization		41,356		44,193		84,395		89,905
Long-lived and other asset impairment		4,647		2,960		12,063		10,033
Restructuring charges		—		743		—		1,640
Interest expense		24,456		25,958		49,702		57,203
Gain on sale of assets, net		(18,948)		(3,124)		(21,060)		(14,156)
Other (income) expense, net		497		(82)		533		(1,971)
Income before income taxes	$	26,064	$	10,013	$	28,728	$	21,206

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Description of Business and Basis of Presentation (Details)	6 Months Ended
	Jun. 30, 2022 segment
Description of Business and Basis of Presentation
Number of reportable segments	2

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Business Transactions - Dispositions (Details) hp in Thousands, $ in Thousands	1 Months Ended		3 Months Ended	6 Months Ended
	May 31, 2022 CompressorUnit hp	Feb. 28, 2021 CompressorUnit hp	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Transactions
Gain on disposition				$ 16,716	$ 5,995
Proceeds from sale				9,728	$ 18,178
Disposed of by Sale | May 2022 Disposition
Transactions
Number of compressors | CompressorUnit	380
Compressor horsepower | hp	70
Cash consideration			$ 55,500	$ 55,500
Disposal Group, Not Discontinued Operation, Name of Segment	Contract Operations		Contract Operations	Contract Operations
Gain on disposition			$ 16,700	$ 16,700
Disposed of by Sale | February 2021 Disposition
Transactions
Number of compressors | CompressorUnit		300
Compressor horsepower | hp		40
Disposal Group, Not Discontinued Operation, Name of Segment		Contract Operations			Contract Operations
Gain on disposition					$ 6,000

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Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Composition of Inventory net of reserves
Parts and supplies	$ 61,571	$ 63,628
Work in progress	16,065	9,241
Inventory	$ 77,636	$ 72,869

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Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment
Property, plant and equipment, gross	$ 3,477,555	$ 3,492,937
Accumulated depreciation	(1,265,811)	(1,266,411)
Property, plant and equipment, net	2,211,744	2,226,526
Compression equipment, facilities and other fleet assets
Property, Plant and Equipment
Property, plant and equipment, gross	3,259,841	3,273,770
Land and buildings
Property, Plant and Equipment
Property, plant and equipment, gross	44,205	43,540
Transportation and shop equipment
Property, Plant and Equipment
Property, plant and equipment, gross	89,866	92,490
Computer hardware and software
Property, Plant and Equipment
Property, plant and equipment, gross	77,393	76,908
Other property, plant and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 6,250	$ 6,229

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Equity Investments (Details) - Ecotec	1 Months Ended
	Apr. 30, 2022	Jun. 30, 2022
Investments
Equity interest agreed to acquire (as a percent)	25.00%
Ownership interest (as a percent)		14.00%

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Hosting Arrangements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Hosting Arrangements
Hosting arrangements, Capitalized costs	$ 14.8		$ 14.8		$ 12.7
Hosting arrangements, Accumulated amortization	1.6		1.6		$ 0.7
Hosting arrangements, Amortization	$ 0.5	$ 0.1	$ 0.9	$ 0.2

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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instruments
Long-term debt	$ 1,532,438	$ 1,530,825
Credit Facility
Debt Instruments
Long-term debt	235,733	234,500
2028 Notes
Debt Instruments
Long term debt gross	800,000	800,000
Premium, net of amortization	11,533	12,536
Deferred financing costs, net of amortization	(9,574)	(10,406)
Long-term debt	801,959	802,130
2027 Notes
Debt Instruments
Long term debt gross	500,000	500,000
Deferred financing costs, net of amortization	(5,254)	(5,805)
Long-term debt	$ 494,746	$ 494,195

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Long-Term Debt - Credit Facility (Details) - Credit Facility - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Feb. 28, 2021	Dec. 31, 2020
Line of Credit Facility
Letter of credit outstanding	$ 5.8		$ 5.8
Debt instrument, variable rate (percentage)			2.30%
Debt instrument weighted average interest rate (percent)	3.90%		3.90%		2.60%
Commitment fee amount	$ 0.5	$ 0.4	$ 1.0	$ 1.0
Current borrowing capacity	476.6		476.6
Undrawn capacity	$ 508.5		$ 508.5
Maximum borrowing capacity						$ 750.0	$ 1,250.0
Debt issuance cost written off				$ 4.9

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) in Stockholders' Equity
Beginning balance	$ 872,323	$ 923,124	$ 891,438	$ 935,557
Other comprehensive income, net of tax:
Total other comprehensive income, net of tax		966	984	1,962
Ending balance	873,918	913,821	873,918	913,821
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Beginning balance		(4,010)	(984)	(5,006)
Other comprehensive income, net of tax:
Loss recognized in other comprehensive income, net of tax benefit		(63)	(405)	(71)
Loss reclassified from accumulated other comprehensive loss to interest expense, net of tax benefit		1,029	1,389	2,033
Total other comprehensive income, net of tax		966	984	1,962
Ending balance		(3,044)		(3,044)
Loss recognized in other comprehensive income, tax benefit	0	(16)	(107)	(18)
Loss reclassified from accumulated other comprehensive loss, tax benefit	$ 0	$ 273	$ 369	$ 540

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Equity - Equity Offering (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021
Equity offering
Net proceeds from issuance of common stock		$ 4,230	$ 3,401
ATM Agreement
Equity offering
Stock issued (in shares)	447,020	447,020	357,148
Net proceeds from issuance of common stock	$ 4,200	$ 4,200	$ 3,400

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Equity - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended						6 Months Ended
	Aug. 16, 2022	Jul. 28, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Distributions
Declared Dividends per Common Share (in dollars per share)			$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.290	$ 0.290
Dividends Paid (in dollars)			$ 22,494	$ 22,673	$ 22,351	$ 22,506	$ 22,331	$ 22,155	$ 45,167	$ 44,486
Forecasted
Distributions
Dividends Paid (in dollars per share)	$ 0.145
Subsequent Event.
Distributions
Declared Dividends per Common Share (in dollars per share)		$ 0.145

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Revenue from Contract with Customers - Disaggregate Revenue (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) hp	Jun. 30, 2021 USD ($) hp	Jun. 30, 2022 USD ($) hp	Jun. 30, 2021 USD ($) hp
Disaggregation of Revenue
Revenue	$ 215,828	$ 195,615	$ 413,029	$ 391,046
Contract Operations
Disaggregation of Revenue
Revenue	166,298	163,865	329,954	329,899
Contract Operations | Transferred at Point in Time
Disaggregation of Revenue
Revenue	900	1,400	1,100	2,400
Contract Operations | 0 - 1,000 horsepower per unit
Disaggregation of Revenue
Revenue	$ 40,489	$ 45,918	$ 82,331	$ 92,837
Contract Operations | 0 - 1,000 horsepower per unit | Minimum
Disaggregation of Revenue
Compressor unit horsepower (horsepower) | hp	0	0	0	0
Contract Operations | 0 - 1,000 horsepower per unit | Maximum
Disaggregation of Revenue
Compressor unit horsepower (horsepower) | hp	1,000	1,000	1,000	1,000
Contract Operations | 1,001 - 1,500 horsepower per unit
Disaggregation of Revenue
Revenue	$ 68,697	$ 66,852	$ 135,698	$ 135,316
Contract Operations | 1,001 - 1,500 horsepower per unit | Minimum
Disaggregation of Revenue
Compressor unit horsepower (horsepower) | hp	1,001	1,001	1,001	1,001
Contract Operations | 1,001 - 1,500 horsepower per unit | Maximum
Disaggregation of Revenue
Compressor unit horsepower (horsepower) | hp	1,500	1,500	1,500	1,500
Contract Operations | Over 1,500 horsepower per unit
Disaggregation of Revenue
Revenue	$ 56,885	$ 50,939	$ 111,479	$ 101,342
Contract Operations | Over 1,500 horsepower per unit | Minimum
Disaggregation of Revenue
Compressor unit horsepower (horsepower) | hp	1,500	1,500	1,500	1,500
Contract Operations | Other
Disaggregation of Revenue
Revenue	$ 227	$ 156	$ 446	$ 404
Aftermarket Services
Disaggregation of Revenue
Revenue	49,530	31,750	83,075	61,147
Aftermarket Services | Services
Disaggregation of Revenue
Revenue	26,001	17,008	43,138	33,900
Aftermarket Services | OTC parts and components sales
Disaggregation of Revenue
Revenue	$ 23,529	$ 14,742	$ 39,937	$ 27,247

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Revenue from Contract with Customers - Performance Obligations (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 286,624
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 156,370
Performance obligations expected to be satisfied, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 93,290
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 31,041
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 4,819
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 914
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligations	$ 190
Performance obligations expected to be satisfied, expected timing	1 year

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Revenue from Contract with Customers - Contract Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Receivables
Accounts receivable, trade, net of allowance	$ 129,323	$ 104,931
Contract with Customers
Receivables
Accounts receivable, trade, net of allowance	$ 121,000	$ 84,700

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Revenue from Contract with Customers - Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Revenue from Contract with Customers
Contractual life of accounts receivable	30 days
Period for analyzing historical loss data to determine loss experience	2 years
Changes in the allowance for credit losses balance
Balance at beginning of period	$ 2,152
Provision for credit losses	365	$ (215)
Write-offs charged against the allowance	(218)
Balance at end of period	$ 2,299

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Revenue from Contract with Customers - Contract Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenue from Contract with Customers
Contract liability with customer	$ 6,900		$ 4,400
Deferred revenue	14,032	$ 4,068
Deferred revenue recognized in earnings	$ 11,541	$ 5,048

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Long-Lived Asset Impairment (Details) - Idle Compressor Units hp in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) CompressorUnit hp	Jun. 30, 2021 USD ($) CompressorUnit hp	Jun. 30, 2022 USD ($) CompressorUnit hp	Jun. 30, 2021 USD ($) CompressorUnit hp
Impaired Long-Lived Assets Held and Used
Idle compressors retired from the active fleet | CompressorUnit	30	45	75	115
Horsepower of idle compressors retired from the active fleet | hp	26	13	57	37
Impairment recorded on idle compressors retired from the active fleet | $	$ 4,647	$ 2,832	$ 12,056	$ 9,844
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income	Long-lived and other asset impairment	Long-lived and other asset impairment	Long-lived and other asset impairment	Long-lived and other asset impairment

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Restructuring Charges - General (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Pandemic Restructuring
Restructuring charges
Estimated additional charges	$ 0.0
Pandemic Restructuring | Severance costs
Restructuring charges
Restructuring charges incurred to date		$ 7.0
2020 Property Restructuring
Restructuring charges
Restructuring charges incurred to date		$ 1.5
Estimated additional charges	$ 0.0

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Restructuring Charges - By segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Restructuring charges
Restructuring charges	$ 743	$ 1,640
Pandemic Restructuring
Restructuring charges
Restructuring charges	605	1,493
2020 Property Restructuring
Restructuring charges
Restructuring charges	7	16
Other Restructuring
Restructuring charges
Restructuring charges	131	131
Corporate
Restructuring charges
Restructuring charges	285	879
Corporate | Pandemic Restructuring
Restructuring charges
Restructuring charges	147	732
Corporate | 2020 Property Restructuring
Restructuring charges
Restructuring charges	7	16
Corporate | Other Restructuring
Restructuring charges
Restructuring charges	131	131
Contract Operations | Operating
Restructuring charges
Restructuring charges	337	616
Contract Operations | Operating | Pandemic Restructuring
Restructuring charges
Restructuring charges	337	616
Aftermarket Services | Operating
Restructuring charges
Restructuring charges	121	145
Aftermarket Services | Operating | Pandemic Restructuring
Restructuring charges
Restructuring charges	$ 121	$ 145

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Restructuring Charges - By type (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Restructuring charges
Restructuring charges	$ 743	$ 1,640
Severance costs
Restructuring charges
Restructuring charges	605	1,493
Property disposal costs
Restructuring charges
Impairment loss		9
Other exit costs	7	7
Restructuring charges	7	16
Other restructuring costs
Restructuring charges
Restructuring charges	$ 131	$ 131

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Income Taxes (Details) $ in Millions	Jun. 30, 2022 USD ($)
Income Taxes
Potential decrease in unrecognized tax benefit	$ 2.7

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Earnings Per Share - Net Income Attributable to Common Stockholders (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Summary of net income attributable to Archrock common stockholders used in the calculation of basic and diluted income per common share
Net income	$ 16,746	$ 8,752	$ 18,467	$ 12,921
Less: Earnings attributable to participating securities	(305)	(285)	(819)	(454)
Net income attributable to common stockholders, basic	16,441	8,467	17,648	12,467
Net income attributable to common stockholders, diluted	$ 16,441	$ 8,467	$ 17,648	$ 12,467
Potential shares of common stock included in computing diluted income attributable to Archrock common stockholders
Weighted average common shares outstanding including participating securities	155,188	154,047	155,005	153,334
Less: Weighted average participating securities outstanding	(2,155)	(2,014)	(2,148)	(1,797)
Weighted average common shares outstanding used in basic net income per common share (in shares)	153,033	152,033	152,857	151,537
Weighted average common shares outstanding used in diluted net income per common share (in shares)	153,164	152,203	152,982	151,699
Restricted stock units
Potential shares of common stock included in computing diluted income attributable to Archrock common stockholders
Net dilutive potential common shares issuable (in shares)	128	169	123	159
ESPP shares
Potential shares of common stock included in computing diluted income attributable to Archrock common stockholders
Net dilutive potential common shares issuable (in shares)	3	1	2	3

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Earnings Per Share - Anti-dilutive Shares (Details) - shares shares in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
On exercise of options where exercise price is greater than average market value for the period
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable
Net dilutive potential common shares issuable (shares)	22	33

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Derivatives - Interest Rate Swaps (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021
Interest rate swap, March 2022 expiration
Notional Disclosures
Notional value of interest rate swaps that expired	$ 300.0
Collateral posted prior to expiration	0.0
Notional value dedesignated		$ 125.0
Fair value of derivative prior to dedesignation			$ 1.6
Derivatives Designated as Hedging Instruments | Interest Rate Swaps
Notional Disclosures
Notional amount of interest rate swaps	$ 175.0

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Derivatives - Effect of Derivative Instruments on Balance Sheets (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Derivatives
Derivative liabilities		$ 1,250
Derivative Liability, Statement of Financial Position	Accrued liabilities	Accrued liabilities
Derivatives Designated as Hedging Instruments
Derivatives
Derivative liabilities		$ 727
Derivative Liability, Statement of Financial Position	Accrued liabilities	Accrued liabilities
Derivatives Not Designated as Hedging Instruments
Derivatives
Derivative liabilities		$ 523
Derivative Liability, Statement of Financial Position	Accrued liabilities	Accrued liabilities

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Derivatives - Effect of Derivative Instruments on Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Effect of derivative instruments on results of operations
Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	$ 24,456	$ 25,958	$ 49,702	$ 57,203
Derivatives Designated as Hedging Instruments | Interest Rate Swaps
Effect of derivative instruments on results of operations
Pre-tax gain (loss) recognized in other comprehensive income (loss)		(79)	(512)	(89)
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Interest expense
Effect of derivative instruments on results of operations
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense		$ (1,302)	(1,758)	$ (2,573)
Derivatives Not Designated as Hedging Instruments | Interest Rate Swaps
Effect of derivative instruments on results of operations
Gain recognized in interest expense			$ 523
Derivative, Gain (Loss), Statement of Income or Comprehensive Income	Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded	Total amount of interest expense in which the effects of cash flow hedges and undesignated interest rate swaps are recorded

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Fair Value Measurements - Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Ecotec
Fair value
Ownership interest (as a percent)	14.00%
Recurring Basis
Fair value measurement of assets and liabilities
Investment in ECOTEC	$ 8,000
Equity Securities, FV-NI, Fair Value by Fair Value Hierarchy Level	Level 3
Derivative liabilities	$ 0	$ 1,250
Derivative Liability, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel2Member	us-gaap:FairValueInputsLevel2Member

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Fair Value Measurements - Measured on Nonrecurring Basis (Details) - Level 3 - Impaired Long-Lived Assets - Compressors $ in Thousands	Jun. 30, 2022 USD ($) Y $ / hp	Dec. 31, 2021 USD ($) $ / hp
Measurement Input, Weighted average disposal period
Fair value
Measurement input | Y	4
Measurement Input, Sale proceeds | Minimum
Fair value
Measurement input	0	0
Measurement Input, Sale proceeds | Maximum
Fair value
Measurement input	621	621
Measurement Input, Sale proceeds | Weighted average
Fair value
Measurement input	41	35
Measurement Input, Discount for market liquidity
Fair value
Measurement input	0.57	0.64
Nonrecurring Basis
Fair value
Impaired assets | $	$ 1,010	$ 4,380

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Fair Value Measurements - Fair Value of Debt (Details) - Fixed Rate Debt - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	$ 1,161,000	$ 1,361,000
Long-Term Debt, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel2Member	us-gaap:FairValueInputsLevel2Member
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	$ 1,296,705	$ 1,296,325

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Stock-Based Compensation - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	$ 3,347	$ 3,586	$ 6,917	$ 6,835
Equity awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	2,970	3,178	6,037	5,841
Liability awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	$ 377	$ 408	$ 880	$ 994

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Stock-Based Compensation - Restricted Stock Activity (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Restricted stock
Shares
Non-vested awards at beginning of period (in shares)	2,578
Granted (in shares)	1,861
Vested (in shares)	(1,106)
Canceled (in shares)	(188)
Non-vested awards at end of period (in shares)	3,145
Weighted Average Grant Date Fair Value Per Share
Non-vested awards at beginning of period (in dollars per share) | $ / shares	$ 10.35
Granted (in dollars per share) | $ / shares	9.03
Vested (in dollars per share) | $ / shares	10.31
Canceled (in dollars per share) | $ / shares	9.35
Non-vested awards at end of period (in dollars per share) | $ / shares	$ 9.64
Cash-settled units
Shares
Non-vested awards at end of period (in shares)	508
Stock-settled awards and units
Shares
Non-vested awards at end of period (in shares)	2,637

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Stock-Based Compensation - Non-vested Awards (Details) - Restricted stock and restricted stock units $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Unrecognized compensation
Unrecognized compensation cost related to unvested awards (in dollars)	$ 21.3
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized	2 years 1 month 6 days

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Commitments and Contingencies - Tax Matters - Loss contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Non-income based tax audits
Loss Contingencies
Accrued liability for the outcomes of non-income based tax audits	$ 3.9	$ 5.8
Non-income based tax audits in contested hearing phase
Loss Contingencies
Accrued liability for the outcomes of non-income based tax audits	$ 0.6	$ 0.6

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Related Party Transactions (Details) - Affiliated Entity $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) director	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Old Ocean Reserves | Archrock, Inc.
Related Party Transaction
Ownership interest (percent)	10.70%		10.70%
Old Ocean Reserves
Related Party Transaction
Minimum ownership interest of outstanding shares required to elect a board of director (percent)	7.50%		7.50%
Number of directors shareholders have right to designate | director			1
Hilcorp and affiliates
Related Party Transaction
Revenue from related party transactions	$ 9.2	$ 9.6	$ 18.6	$ 19.1
Due from related party	$ 4.3		$ 4.3		$ 3.7

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Segments - Number (Details)	6 Months Ended
	Jun. 30, 2022 segment
Segments
Number of reportable segments	2

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Segments - Revenue and Gross Margin by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue and other financial information by reportable segment
Revenue	$ 215,828	$ 195,615	$ 413,029	$ 391,046
Gross margin	105,763	106,738	209,825	215,021
Contract Operations
Revenue and other financial information by reportable segment
Revenue	166,298	163,865	329,954	329,899
Gross margin	97,943	102,478	197,098	207,147
Aftermarket Services
Revenue and other financial information by reportable segment
Revenue	49,530	31,750	83,075	61,147
Gross margin	$ 7,820	$ 4,260	$ 12,727	$ 7,874

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Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reconciliation Net Income (Loss) to Gross Margin
Total gross margin	$ 105,763	$ 106,738	$ 209,825	$ 215,021
Less:
Selling, general and administrative	27,691	26,077	55,464	51,161
Depreciation and amortization	41,356	44,193	84,395	89,905
Long-lived and other asset impairment	4,647	2,960	12,063	10,033
Restructuring charges		743		1,640
Interest expense	24,456	25,958	49,702	57,203
Gain on sale of assets, net	(18,948)	(3,124)	(21,060)	(14,156)
Other (income) expense, net	497	(82)	533	(1,971)
Income before income taxes	$ 26,064	$ 10,013	$ 28,728	$ 21,206

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Impact of Hurricane (Details) $ in Millions	Dec. 31, 2021 USD ($)
Hurricane Ida
Natural disaster
Insurance recovery receivable	$ 2.8

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Subsequent Event (Details) - Ecotec	Jul. 01, 2022	Jun. 30, 2022
Subsequent Event
Ownership interest (as a percent)		14.00%
Subsequent Event.
Subsequent Event
Equity interest acquired (as a percent)	5.00%
Ownership interest (as a percent)	19.00%