Archrock (AROC) 10-Q 3 Aug 22 2022 Q2 Quarterly report Financial data

Cover

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

Condensed Consolidated Balance

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

Condensed Consolidated Balanc_2

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

Condensed Consolidated Statemen

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

Condensed Consolidated Statem_2

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

Condensed Consolidated Statem_3

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

Condensed Consolidated Statem_4

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

Condensed Consolidated Statem_5

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

Description of Business and Bas

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. ​

Business Transactions

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.

Inventory

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 ​

Property, Plant and Equipment,

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 ​

Equity Investments

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.

Hosting Arrangements

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.

Long-Term Debt

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.

Accumulated Other Comprehensive

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.

Equity

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

Revenue from Contract with Cust

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.

Long-Lived and Other Asset Impa

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 ​

Restructuring Charges

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 ​

Income Taxes

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.

Earnings Per Share

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 ​

Derivatives

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.

Fair Value Measurements

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”) .

Stock-Based Compensation

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.

Commitments and Contingencies

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.

Related Party Transactions

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, a nd $18.6 million and $19.1 million during the six months ended June 30, 2022 and 2021, respectively

Segments

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 ​

Impact of Hurricane

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. ​

Subsequent Event

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%. ​ ​

Description of Business and B_2

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.

Inventory (Tables)

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

Property, Plant and Equipment_2

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

Long-Term Debt (Tables)

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

Accumulated Other Comprehensi_2

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)

Equity (Tables)

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

Revenue from Contract with Cu_2

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

Long-Lived and Other Asset Im_2

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

Restructuring Charges (Tables)

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

Earnings Per Share (Tables)

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

Derivatives (Tables)

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 ​ $ —

Fair Value Measurements (Tables

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.

Stock-Based Compensation (Table

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.

Segments (Tables)

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

Description of Business and B_3

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

Business Transactions - Disposi

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

Inventory (Details)

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

Property, Plant and Equipment_3

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

Equity Investments (Details)

Equity Investments (Details) - Ecotec	1 Months Ended
	Apr. 30, 2022	Jun. 30, 2022
Investments
Equity interest agreed to acquire (as a percent)	25%
Ownership interest (as a percent)		14%

Hosting Arrangements (Details)

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

Long-Term Debt - Schedule of Lo

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

Long-Term Debt - Credit Facilit

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	$ 1
Current borrowing capacity	476.6		476.6
Undrawn capacity	$ 508.5		$ 508.5
Maximum borrowing capacity						$ 750	$ 1,250
Debt issuance cost written off				$ 4.9

Accumulated Other Comprehensi_3

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

Equity - Equity Offering (Detai

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

Equity - Cash Dividends (Detail

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

Revenue from Contract with Cu_3

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

Revenue from Contract with Cu_4

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

Revenue from Contract with Cu_5

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

Revenue from Contract with Cu_6

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

Revenue from Contract with Cu_7

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

Long-Lived Asset Impairment (De

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

Restructuring Charges - General

Restructuring Charges - General (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Pandemic Restructuring
Restructuring charges
Estimated additional charges	$ 0
Pandemic Restructuring | Severance costs
Restructuring charges
Restructuring charges incurred to date		$ 7
2020 Property Restructuring
Restructuring charges
Restructuring charges incurred to date		$ 1.5
Estimated additional charges	$ 0

Restructuring Charges - By segm

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

Restructuring Charges - By type

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

Income Taxes (Details)

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

Earnings Per Share - Net Income

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

Earnings Per Share - Anti-dilut

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

Derivatives - Interest Rate Swa

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
Collateral posted prior to expiration	0
Notional value dedesignated		$ 125
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

Derivatives - Effect of Derivat

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

Derivatives - Effect of Deriv_2

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

Fair Value Measurements - Measu

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%
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

Fair Value Measurements - Mea_2

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

Fair Value Measurements - Fair

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

Stock-Based Compensation - Comp

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

Stock-Based Compensation - Rest

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

Stock-Based Compensation - Non-

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

Commitments and Contingencies -

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

Related Party Transactions (Det

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

Segments - Number (Details)

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

Segments - Revenue and Gross Ma

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

Segments - Reconciliation of Ne

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

Impact of Hurricane (Details)

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

Subsequent Event (Details)

Subsequent Event (Details) - Ecotec	Jul. 01, 2022	Jun. 30, 2022
Subsequent Event
Ownership interest (as a percent)		14%
Subsequent Event.
Subsequent Event
Equity interest acquired (as a percent)	5%
Ownership interest (as a percent)	19%