10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Form 10-Q

(MARK ONE)

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

FOR THE QUARTERLY PERIOD ENDED June 30, 2018

OR

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

FOR THE TRANSITION PERIOD FROM                   TO                  

Commission File No. 001-33666

ARCHROCK, INC.

(Exact name of registrant as specified in its charter)

Delaware	74-3204509
(State or Other Jurisdiction of	(I.R.S. Employer
Incorporation or Organization)	Identification No.)
9807 Katy Freeway, Suite 100
Houston, Texas	77024
(Address of principal executive offices)	(Zip Code)

(281) 836-8000

(Registrant’s telephone number, including area code)

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

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

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

Large accelerated filer x		Accelerated filer o
Non-accelerated filer o	(Do not check if a smaller reporting company)
		Smaller reporting company o
		Emerging growth company o
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes o No x

Number of shares of the common stock of the registrant outstanding as of July 26, 2018: 129,414,646 shares.

TABLE OF CONTENTS

	Page
GLOSSARY	3
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (unaudited)	5
Condensed Consolidated Balance Sheets	5
Condensed Consolidated Statements of Operations	6
Condensed Consolidated Statements of Comprehensive Income (Loss)	7
Condensed Consolidated Statements of Equity	8
Condensed Consolidated Statements of Cash Flows	9
Notes to Unaudited Condensed Consolidated Financial Statements	10
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	34
Item 3. Quantitative and Qualitative Disclosures About Market Risk	48
Item 4. Controls and Procedures	48
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	50
Item 1A. Risk Factors	50
Item 2. Unregistered Sales of Equity Securities	50
Item 3. Defaults Upon Senior Securities	50
Item 4. Mine Safety Disclosures	50
Item 5. Other Information	50
Item 6. Exhibits	51
SIGNATURES	52

2

GLOSSARY

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

2006 Partnership LTIP	The Archrock Partners, L.P. Long Term Incentive Plan, adopted in October 2006
2007 Plan	The Archrock, Inc. 2007 Stock Incentive Plan
2013 Plan	The Archrock, Inc. 2013 Stock Incentive Plan
2017 Form 10-K	Archrock, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2017
2017 Partnership LTIP	The Archrock Partners, L.P. Long Term Incentive Plan, adopted in April 2017
51st District Court	51st Judicial District Court of Irion County, Texas
Amendment No. 1	Amendment No. 1 to Credit Agreement, dated February 23, 2018, which amended that certain Credit Agreement, dated as of March 30, 2017, which governs the Partnership Credit Facility
Archrock, our, we, us	Archrock, Inc., individually and together with its wholly-owned subsidiaries
Archrock Credit Facility	Archrock’s $350 million revolving credit facility due November 2020
ASU 2016-02	Accounting Standards Update No. 2016-02 Leases (Topic 842)
ASU 2016-13	Accounting Standards Update No. 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments
ASU 2016-15	Accounting Standards Update No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments
ASU 2017-12	Accounting Standards Update No. 2017-12 Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities
ASU 2018-02	Accounting Standards Update No. 2018-02 Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
ASU 2018-05	Accounting Standards Update No. 2018-05 Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118
Bcf	Billion cubic feet
DOJ	U.S. Department of Justice
EBITDA	Earnings before interest, taxes, depreciation and amortization
EES Leasing	Archrock Services Leasing LLC, formerly known as EES Leasing LLC
EIA	U.S. Energy Information Administration
Exchange Act	Securities Exchange Act of 1934, as amended
EXLP Leasing	Archrock Partners Leasing LLC, formerly known as EXLP Leasing LLC
FASB	Financial Accounting Standards Board
FCPA	U.S. Foreign Corrupt Practices Act
Financial Statements	Archrock’s Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q
Former Credit Facility	The Partnership’s former $825.0 million revolving credit facility and $150.0 million term loan, terminated in March 2017
GAAP	Accounting principles generally accepted in the U.S.
General Partner	Archrock General Partner, L.P., a wholly owned subsidiary of Archrock and the Partnership’s general partner
Heavy Equipment Statutes	Texas Tax Code §§ 23.1241, 23.1242
Merger	The transaction completed on April 26, 2018 pursuant to the Merger Agreement in which Archrock acquired all of the Partnership’s outstanding common units not already owned by Archrock
Merger Agreement	Agreement and Plan of Merger, dated as of January 1, 2018, among Archrock and the Partnership, which was amended by Amendment No. 1 to Agreement and Plan of Merger on January 11, 2018, and which was completed and effective on April 26, 2018.
MMBtu	Million British thermal unit
OTC	Over-the-counter, as related to aftermarket services parts and components
Partnership	Archrock Partners, L.P., together with its subsidiaries

3

Partnership Credit Facility	The Partnership’s $1.25 billion asset-based revolving credit facility due March 2022, as amended by Amendment No. 1
PDVSA Gas	PDVSA Gas, S.A., a subsidiary of Petroleos de Venezuela, S.A.
Revenue Recognition Update	Accounting Standards Update No. 2014-09 Revenue from Contracts with Customers (Topic 606) and additional related standards updates
ROU	Right-of-use, as related to the new lease model under ASU 2016-02
SAB 118	SEC Staff Accounting Bulletin No. 118
SEC	U.S. Securities and Exchange Commission
SG&A	Selling, general and administrative
Spin-off	The spin-off of our international contract operations, international aftermarket services and global fabrication businesses into a standalone public company operating as Exterran Corporation, effective November 3, 2015
TCJA	Public Law No. 115-97, a comprehensive tax reform bill signed into law on December 22, 2017
Tcf	Trillion cubic feet
U.S.	United States of America

4

PART I.  FINANCIAL INFORMATION

Item 1.  Financial Statements

ARCHROCK, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except par value and share amounts)

(unaudited)

	June 30, 2018			December 31, 2017
ASSETS
Current assets:
Cash and cash equivalents	$	3,532		$	10,536
Accounts receivable, trade, net of allowance of $1,847 and $1,794, respectively	130,596			113,416
Inventory	82,470			90,691
Other current assets	9,808			6,220
Current assets associated with discontinued operations	300			300
Total current assets	226,706			221,163
Property, plant and equipment, net	2,125,287			2,076,927
Intangible assets, net	60,390			68,872
Contract costs	31,240			—
Other long-term assets	34,195			27,782
Long-term assets associated with discontinued operations	6,421			13,263
Total assets	$	2,484,239		$	2,408,007
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable, trade	$	91,818		$	54,585
Accrued liabilities	67,152			71,116
Deferred revenue	8,859			4,858
Current liabilities associated with discontinued operations	297			297
Total current liabilities	168,126			130,856
Long-term debt	1,458,863			1,417,053
Deferred income taxes	2,568			97,943
Other long-term liabilities	17,536			20,116
Long-term liabilities associated with discontinued operations	6,421			6,421
Total liabilities	1,653,514			1,672,389
Commitments and contingencies (Note 15)
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, 135,478,039 and 76,880,862 shares issued, respectively	1,355			769
Additional paid-in capital	3,150,118			3,093,058
Accumulated other comprehensive income	9,374			1,197
Accumulated deficit	(2,252,349		)	(2,241,243		)
Treasury stock, 6,072,751 and 5,930,380 common shares, at cost, respectively	(77,773		)	(76,732		)
Total Archrock stockholders’ equity	830,725			777,049
Noncontrolling interest	—			(41,431		)
Total equity	830,725			735,618
Total liabilities and equity	$	2,484,239		$	2,408,007

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

5

ARCHROCK, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)

(unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Revenue:
Contract operations	$	165,450		$	151,114		$	326,647		$	301,098
Aftermarket services	61,420			46,868			112,263			86,769
Total revenue	226,870			197,982			438,910			387,867
Costs and expenses:
Cost of sales (excluding depreciation and amortization):
Contract operations	67,809			62,243			132,404			126,340
Aftermarket services	50,793			39,609			93,130			73,341
Selling, general and administrative	26,649			25,162			54,157			52,715
Depreciation and amortization	43,331			47,248			87,786			95,020
Long-lived asset impairment	6,953			5,508			11,663			13,753
Restatement and other charges	(1,076		)	1,920			(591		)	2,721
Restructuring and other charges	—			366			—			823
Interest expense	23,337			22,504			45,884			43,925
Debt extinguishment costs	2,450			—			2,450			291
Merger-related costs	5,686			—			9,811			—
Other income, net	(1,644		)	(962		)	(2,789		)	(1,756		)
Total costs and expenses	224,288			203,598			433,905			407,173
Income (loss) before income taxes	2,582			(5,616		)	5,005			(19,306		)
Benefit from income taxes	(1,567		)	(1,580		)	(1,213		)	(1,257		)
Net income (loss)	4,149			(4,036		)	6,218			(18,049		)
Less: Net income attributable to the noncontrolling interest	(2,212		)	(2,651		)	(8,097		)	(323		)
Net income (loss) attributable to Archrock stockholders	$	1,937		$	(6,687	)	$	(1,879	)	$	(18,372	)
Basic and diluted net income (loss) per common share:
Net income (loss) attributable to Archrock common stockholders	$	0.02		$	(0.10	)	$	(0.02	)	$	(0.27	)
Weighted average common shares outstanding:
Basic	111,296			69,588			90,589			69,496
Diluted	111,402			69,588			90,589			69,496
Dividends declared and paid per common share	$	0.12		$	0.12		$	0.24		$	0.24

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

6

ARCHROCK, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)

(unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net income (loss)	$	4,149		$	(4,036	)	$	6,218		$	(18,049	)
Other comprehensive income, net of tax:
Derivative gain, net of reclassifications to earnings	1,720			398			6,282			1,814
Amortization of terminated interest rate swaps	85			21			230			45
Merger-related adjustments	5,670			—			5,670			—
Total other comprehensive income	7,475			419			12,182			1,859
Comprehensive income (loss)	11,624			(3,617		)	18,400			(16,190		)
Less: Comprehensive income attributable to the noncontrolling interest	(3,506		)	(2,877		)	(12,360		)	(1,440		)
Comprehensive income (loss) attributable to Archrock stockholders	$	8,118		$	(6,494	)	$	6,040		$	(17,630	)

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

7

ARCHROCK, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

(in thousands)

(unaudited)

	Archrock Stockholders
	Common Stock		Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Accumulated Deficit			Noncontrolling Interest			Total
Balance at January 1, 2017	$	762	$	3,021,040	$	(1,678	)	$	(73,944	)	$	(2,227,214	)	$	(34,038	)	$	684,928
Treasury stock purchased								(2,180		)							(2,180		)
Cash dividends											(16,992		)				(16,992		)
Stock-based compensation, net of forfeitures	5		3,984											269			4,258
Stock options exercised	1		938														939
Contribution from Exterran Corporation			44,709														44,709
Cash distribution to noncontrolling unitholders of the Partnership														(20,908		)	(20,908		)
Impact of adoption of Accounting Standards Update 2016-09			209								1,081						1,290
Comprehensive loss
Net income (loss)											(18,372		)	323			(18,049		)
Derivative gain, net of reclassifications to earnings					697									1,117			1,814
Amortization of terminated interest rate swaps					45												45
Balance at June 30, 2017	$	768	$	3,070,880	$	(936	)	$	(76,124	)	$	(2,261,497	)	$	(53,237	)	$	679,854
Balance at January 1, 2018	$	769	$	3,093,058	$	1,197		$	(76,732	)	$	(2,241,243	)	$	(41,431	)	$	735,618
Treasury stock purchased								(1,041		)							(1,041		)
Cash dividends											(24,018		)				(24,018		)
Shares issued in employee stock purchase plan	1		415														416
Stock-based compensation, net of forfeitures	9		3,568											(64		)	3,513
Stock options exercised			262														262
Cash distribution to noncontrolling unitholders of the Partnership														(11,766		)	(11,766		)
Impact of adoption of Revenue Recognition Update											14,666						14,666
Impact of adoption of ASU 2017-12											383						383
Impact of adoption of ASU 2018-02					258						(258		)				—
Merger-related adjustments	576		52,815											40,901			94,292
Comprehensive income
Net income (loss)											(1,879		)	8,097			6,218
Derivative gain, net of reclassifications to earnings					2,019									4,263			6,282
Amortization of terminated interest rate swaps					230												230
Merger-related adjustments					5,670												5,670
Balance at June 30, 2018	$	1,355	$	3,150,118	$	9,374		$	(77,773	)	$	(2,252,349	)	$	—		$	830,725

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

8

ARCHROCK, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Six Months Ended June 30,
	2018			2017
Cash flows from operating activities:
Net income (loss)	$	6,218		$	(18,049	)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	87,786			95,020
Long-lived asset impairment	11,663			13,753
Inventory write-downs	1,018			984
Amortization of deferred financing costs	3,094			3,904
Amortization of debt discount	694			652
Amortization of terminated interest rate swaps	291			68
Debt extinguishment costs	2,450			291
Interest rate swaps	327			980
Stock-based compensation expense	3,763			4,075
Non-cash restructuring charges	—			823
Provision for doubtful accounts	908			1,211
Gain on sale of property, plant and equipment	(2,188		)	(1,789		)
Deferred income tax benefit	(1,327		)	(1,499		)
Amortization of contract costs	6,281			—
Changes in assets and liabilities:
Accounts receivable, trade	(10,458		)	1,290
Inventory	(50		)	(1,784		)
Other current assets	484			(1,159		)
Contract costs	(15,998		)	—
Accounts payable and other liabilities	9,858			2,139
Deferred revenue	507			186
Other	(106		)	157
Net cash provided by continuing operations	105,215			101,253
Net cash provided by discontinued operations	—			45
Net cash provided by operating activities	105,215			101,298
Cash flows from investing activities:
Capital expenditures	(132,172		)	(99,409		)
Proceeds from sale of property, plant and equipment	19,193			8,889
Proceeds from insurance	252			—
Net cash used in investing activities	(112,727		)	(90,520		)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	383,830			969,000
Repayments of long-term debt	(343,636		)	(970,000		)
Payments for debt issuance costs	(3,332		)	(14,855		)
Payments for settlement of interest rate swaps that include financing elements	(207		)	(1,041		)
Dividends to Archrock stockholders	(24,018		)	(16,992		)
Distributions to noncontrolling partners in the Partnership	(11,766		)	(20,908		)
Proceeds from stock options exercised	262			939
Proceeds from stock issued under our employee stock purchase plan	416			—
Purchases of treasury stock	(1,041		)	(2,180		)
Contribution from Exterran Corporation	—			44,720
Net cash provided by (used in) financing activities	508			(11,317		)
Net decrease in cash and cash equivalents	(7,004		)	(539		)
Cash and cash equivalents at beginning of period	10,536			3,134
Cash and cash equivalents at end of period	$	3,532		$	2,595
Supplemental disclosure of Non-Cash Transactions:
Issuance of Archrock common stock pursuant to merger, net of tax	$	53,391		$	—

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

9

ARCHROCK, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. Organization and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with U.S. GAAP for interim financial information 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 includes all adjustments, consisting only of normal recurring adjustments, which are necessary to present fairly 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 2017 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. Certain prior year amounts have been reclassified to conform to the current year presentation.

Organization

We are a pure play U.S. natural gas contract operations services business and the leading provider of natural gas compression services to customers in the oil and natural gas 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 primary business segments: contract operations and aftermarket services. In our contract operations business, we use our owned fleet of natural gas compression equipment to provide operations services to our customers. In our aftermarket services business line, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

Merger Transaction

On January 1, 2018, we entered into the Merger Agreement pursuant to which we agreed to merge the Partnership with and into our indirect wholly-owned subsidiary. On April 26, 2018, the Merger was completed and we issued 57.6 million shares of our common stock to acquire the 41.2 million common units of the Partnership not owned by us prior to the Merger at a fixed exchange ratio of 1.40 shares of our common stock for each Partnership common unit for total implied consideration of $625.3 million. Additionally, the incentive distribution rights in the Partnership, all of which we owned indirectly prior to the Merger, were canceled and ceased to exist. As a result of the Merger, the Partnership’s common units are no longer publicly traded. The Partnership’s 6% senior notes due April 2021 and October 2022 were not impacted by the Merger and remain outstanding.

As we controlled the Partnership prior to the Merger and continue to control the Partnership after the Merger, we accounted for the change in our ownership interest in the Partnership as an equity transaction which was reflected as a reduction of the noncontrolling interest with corresponding increases to common stock, additional paid-in capital and accumulated other comprehensive income. No gain or loss was recognized in our condensed consolidated statements of operations as a result of the Merger.

The following table presents the effects of changes in our ownership interest in the Partnership on the equity attributable to Archrock stockholders:

	Six Months Ended June 30,
	2018			2017
Net loss attributable to Archrock stockholders	$	(1,879	)	$	(18,372	)
Decrease in Archrock stockholders’ additional paid-in capital for purchase of Partnership common units	52,815			—
Change from net loss attributable to Archrock stockholders and transfers from noncontrolling interest	$	50,936		$	(18,372	)

Prior to the Merger, public unitholders held an approximate 57% ownership interest in the Partnership and we owned the remaining equity interest. The equity interests in the Partnership that were owned by the public prior to April 26, 2018 are reflected within noncontrolling interest in our condensed consolidated balance sheet as of December 31, 2017. The earnings of the Partnership that were attributed to its common units held by the public prior to April 26, 2018 are reflected in net income (loss) attributable to the noncontrolling interest in our condensed consolidated statement of operations.

10

The tax effects of the Merger were reported as adjustments to other long-term assets, long-term assets associated with discontinued operations, deferred income taxes, additional paid-in capital and other comprehensive income. Due to the change in ownership and tax step up from the consideration given in the Merger, we recorded a $156.5 million deferred tax asset which resulted in an overall $57.2 million net deferred tax asset. We evaluated the realizability of our resulting net deferred tax asset position by assessing the available positive and negative evidence and concluded, based on the weight of the evidence, that a $55.3 million valuation allowance was required. The $101.2 million net tax impact of the change in deferred tax asset and the valuation allowance was recorded as an offsetting increase to additional paid-in capital.

We incurred $5.7 million and $9.8 million of transaction costs directly attributable to the Merger during the three and six months ended June 30, 2018, respectively, including financial advisory, legal service and other professional fees, which were recorded to merger-related costs on our condensed consolidated statements of operations.

Significant Accounting Policies

Income (Loss) Attributable to Archrock Common Stockholders Per Common Share

Basic income (loss) attributable to Archrock common stockholders 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 income (loss) attributable to Archrock common stockholders per common share is determined by dividing income (loss) attributable to Archrock common stockholders 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, no effect is given to participating securities because they do not have a contractual obligation to participate in our losses.

Diluted income (loss) attributable to Archrock common stockholders per common share is computed using the weighted average number of shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding options and stock to be issued pursuant to our employee stock purchase plan unless their effect would be anti-dilutive.

The following table summarizes net income (loss) attributable to Archrock common stockholders used in the calculation of basic and diluted loss per common share (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net income (loss) attributable to Archrock stockholders	$	1,937		$	(6,687	)	$	(1,879	)	$	(18,372	)
Less: Net income attributable to participating securities	(157		)	(180		)	(313		)	(334		)
Net income (loss) attributable to Archrock common stockholders	$	1,780		$	(6,867	)	$	(2,192	)	$	(18,706	)

11

The following table shows the potential shares of common stock that were included in computing diluted income (loss) attributable to Archrock common stockholders per common share (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Weighted average common shares outstanding including participating securities	112,995		70,908		92,130		70,833
Less: Weighted average participating securities outstanding	(1,699	)	(1,320	)	(1,541	)	(1,337	)
Weighted average common shares outstanding — used in basic income (loss) per common share	111,296		69,588		90,589		69,496
Net dilutive potential common shares issuable:
On exercise of options	99		*		*		*
On the settlement of employee stock purchase plan shares	7		—		*		—
Weighted average common shares outstanding — used in diluted income (loss) per common share	111,402		69,588		90,589		69,496

——————

* Excluded from diluted income (loss) per common share as their inclusion would have been anti-dilutive.

The following table shows the potential shares of common stock issuable that were excluded from computing diluted income (loss) attributable to Archrock common stockholders per common share as their inclusion would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2018	2017	2018	2017
Net dilutive potential common shares issuable:
On exercise of options where exercise price is greater than average market value for the period	187	282	205	297
On exercise of options	—	108	89	125
On the settlement of employee stock purchase plan shares	—	—	5	—
Net dilutive potential common shares issuable	187	390	299	422

Comprehensive Income (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 income (loss) consists of changes in the fair value of derivative instruments, net of tax, that are designated as cash flow hedges, amortization of terminated interest rate swaps and adjustments related to changes in our ownership of the Partnership.

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The following table presents the changes in accumulated other comprehensive income (loss) by component, net of tax, and excluding noncontrolling interest, during the six months ended June 30, 2017 and 2018 (in thousands):

	Derivatives Cash Flow Hedges
Accumulated other comprehensive loss, January 1, 2017	$	(1,678	)
Gain recognized in other comprehensive income, net of tax(1)	173
Loss reclassified from accumulated other comprehensive loss, net of tax(2)	569
Other comprehensive income attributable to Archrock stockholders	742
Accumulated other comprehensive loss, June 30, 2017	$	(936	)
Accumulated other comprehensive income, January 1, 2018	$	1,197
Gain recognized in other comprehensive income, net of tax(3)	2,051
Loss reclassified from accumulated other comprehensive loss, net of tax(4)	456
Merger-related adjustments (5)	5,670
Other comprehensive income attributable to Archrock stockholders	8,177
Accumulated other comprehensive income, June 30, 2018	$	9,374

——————

⁽¹⁾  During the three months ended June 30, 2017, we recognized a loss of $0.1 million and a tax benefit of $0.1 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2017, we recognized a gain of $0.2 million and immaterial tax expense in other comprehensive income (loss) related to change in the fair value of derivative financial instruments.

⁽²⁾  During the three months ended June 30, 2017, we reclassified a loss of $0.4 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2017, we reclassified a loss of $0.9 million to interest expense and a tax benefit of $0.3 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss).

⁽³⁾  During the three months ended June 30, 2018, we recognized a gain of $0.9 million and a tax provision of $0.5 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2018, we recognized a gain of $2.9 million and a tax provision of $0.9 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments.

⁽⁴⁾  During the three months ended June 30, 2018, we reclassified an immaterial loss to interest expense and an immaterial tax benefit to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2018, we reclassified a loss of $0.3 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). Additionally, during the six months ended June 30, 2018, we reclassified stranded tax effects resulting from the TCJA of $0.3 million to accumulated deficit in our condensed consolidated balance sheets. See Note 2(“Recent Accounting Developments”) for further detail.

⁽⁵⁾  Pursuant to the Merger, we reclassified a gain of $5.7 million from noncontrolling interest to accumulated other comprehensive income (loss) related to fair value of derivative instruments that was previously attributed to public ownership of the Partnership.

2. Recent Accounting Developments

Accounting Standards Updates Implemented

ASU 2018-05 was issued in March 2018 to clarify the income taxes disclosure requirements as they pertain to SAB 118, including the requirement to disclose a reasonable estimate, if determinable, of the tax effects of the TCJA in the reporting period in which the TCJA was enacted, as well as additional disclosures required in the following interim reporting periods if the measurement period approach is used. In accordance with ASU 2018-05, we disclosed a reasonable estimate of the income tax effects of the TCJA on our consolidated financial statements in our 2017 Form 10-K and there have been no changes to this estimate. We anticipate finalizing the amounts in connection with the completion of our 2017 income tax returns in the fourth quarter of 2018.

On January 1, 2018, we adopted ASU 2018-02 which allows for a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the TCJA. As a result of the TCJA’s corporate rate reduction, we had $0.3 million of stranded tax effects in accumulated other comprehensive income related to our derivative instruments and terminated interest rate swaps, which we elected to reclassify to accumulated deficit.

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On January 1, 2018, we adopted ASU 2017-12 using the modified retrospective approach to existing cash flow hedge relationships as of January 1, 2018. ASU 2017-12 expands and refines hedge accounting for both financial and nonfinancial risk components, aligns the recognition and presentation of the effects of the hedging instrument and hedged item in the financial statements and eliminates the requirement to separately measure and report hedge ineffectiveness. As a result of the adoption of ASU 2017-12, we recognized a net gain of $0.4 million as a cumulative-effect adjustment to opening retained earnings and a corresponding adjustment to other comprehensive income (loss) to reverse the cumulative ineffectiveness previously recognized in interest expense.

On January 1, 2018, we adopted ASU 2016-15 on a retrospective basis. ASU 2016-15 addresses diversity in practice and simplifies several elements of cash flow classification including how certain cash receipts and cash payments are classified in the statement of cash flows. ASU 2016-15 did not have an impact on our condensed consolidated statement of cash flow for the six months ended June 30, 2017.

Revenue Recognition Update

On January 1, 2018, we adopted the Revenue Recognition Update using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We recognized the cumulative effect of initially applying the Revenue Recognition Update as an adjustment to the opening balance of retained earnings. For contracts that were modified before the effective date, we identified performance obligations on the basis of the current version of the contract, which included any contract modifications since inception. The application of the practical expedient for contract modifications did not have a material effect on the adjustment to retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

Under previous guidance, contract operations revenue was recognized when earned, which generally occurs monthly when the service is provided under our customer contracts. Under the Revenue Recognition Update the timing of revenue recognition is impacted by contractual provisions for service availability guarantees of our compressor assets and re-billable costs associated with moving our compressor assets to a customer site. These changes are further discussed below and did not result in a material difference from previous practice for contract operations.

The Revenue Recognition Update resulted in a significant change related to our aftermarket services operations, maintenance, overhaul and reconfiguration services. Under previous guidance, revenue was recognized on a completed contract basis as products were delivered and title was transferred or services were performed for the customer. Under the Revenue Recognition Update, these services are recognized as revenue over time, using output or input methods to measure the progress toward complete satisfaction of the performance obligation based on the nature of the goods or services being provided. The adoption did not result in a material difference in the amount or timing of revenues for aftermarket services parts and components sales.

The Revenue Recognition Update provides guidance on contract costs that should be recognized as assets and amortized over the period that the related goods or services transfer to the customer. Certain costs that were previously expensed as incurred, such as sales commissions and freight charges to transport compressor assets, are deferred and amortized.

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The following table summarizes the cumulative impact of the adoption of the Revenue Recognition Update on the opening balance sheet (in thousands):

	December 31, 2017			Adjustments Due to the Revenue Recognition Update			January 1, 2018
Assets
Accounts receivable, trade	$	113,416		$	7,883		$	121,299
Inventory	90,691			(6,917		)	83,774
Contract costs	—			21,524			21,524
Liabilities
Accrued liabilities	$	71,116		$	209		$	71,325
Deferred revenue	4,858			3,188			8,046
Deferred income taxes	97,943			4,427			102,370
Equity
Accumulated deficit	$	(2,241,243	)	$	14,666		$	(2,226,577	)

The following tables summarize the impact of the application of the Revenue Recognition Update on our condensed consolidated balance sheet and condensed consolidated statement of operations (in thousands):

	June 30, 2018
Balance Sheet	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Assets
Accounts receivable, trade	$	130,596		$	115,923		$	14,673
Inventory	82,470			97,463			(14,993		)
Contract costs	31,240			—			31,240
Liabilities
Accounts payable, trade	$	91,818		$	91,776		$	42
Accrued liabilities	67,152			66,930			222
Deferred revenue	8,859			7,037			1,822
Deferred income taxes	2,568			2,329			239
Other long-term liabilities	17,536			17,514			22
Equity
Additional paid-in capital (1)	$	3,150,118		$	3,140,754		$	9,364
Accumulated deficit	(2,252,349		)	(2,271,558		)	19,209

——————

⁽¹⁾  Represents the impact of the Revenue Recognition Update on net income attributable to noncontrolling interest which was reclassed to additional paid-in capital pursuant to the Merger.

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	Three Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	165,450		$	166,341		$	(891	)
Aftermarket services	61,420			56,660			4,760
Total revenue	226,870			223,001			3,869
Cost of sales (excluding depreciation and amortization):
Contract operations	67,809			71,956			(4,147		)
Aftermarket services	50,793			47,103			3,690
Selling, general and administrative	26,649			27,025			(376		)
Benefit from income taxes	(1,567		)	(4,097		)	2,530
Less: Net income attributable to the noncontrolling interest	(2,212		)	(1,735		)	(477		)
Net income attributable to Archrock stockholders	1,937			242			1,695

	Six Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	326,647		$	329,325		$	(2,678	)
Aftermarket services	112,263			101,442			10,821
Total Revenue	438,910			430,767			8,143
Cost of sales (excluding depreciation and amortization):
Contract operations	132,404			141,150			(8,746		)
Aftermarket services	93,130			85,011			8,119
Selling, general and administrative	54,157			55,127			(970		)
Benefit from income taxes	(1,213		)	(4,454		)	3,241
Less: Net income attributable to the noncontrolling interest	(8,097		)	(6,141		)	(1,956		)
Net loss attributable to Archrock stockholders	(1,879		)	(6,422		)	4,543

Accounting Standards Updates Not Yet Implemented

In June 2016, the FASB issued ASU 2016-13 that changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019 and early adoption is permitted. Entities will apply ASU 2016-13 provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02 that establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. Under the new guidance, lessor accounting is largely unchanged. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach that involves recasting the comparative periods in the year of initial application is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain optional transition practical expedients available. We intend to adopt ASU 2016-02 on January 1, 2019 and are currently assessing the practical expedients.

16

Though our assessment of the impact of the adoption of ASU 2016-02 is ongoing, we anticipate significant changes to our consolidated balance sheets and disclosures based on the requirements prescribed by the new standard. We do not believe the standard will materially affect our consolidated statements of operations. We are in the process of assessing changes to our internal control structure and will continue to evaluate our business processes, systems and accounting policies that are necessary to implement this standard.

3. Revenue from Contracts with Customers

Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we are entitled to receive in exchange for those goods or services. Sales and usage-based taxes that are collected from the customer are excluded from revenue.

The following table presents our revenue from contracts with customers disaggregated by revenue source (in thousands):

	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
Contract Operations (1):
0 - 1000 horsepower per unit	$	59,600	$	119,192
1,001 - 1,500 horsepower per unit	68,948		135,178
Over 1,500 horsepower per unit	35,904		70,314
Other (2)	998		1,963
Total contract operations (3)	165,450		326,647
Aftermarket Services (1):
Services	36,706		68,913
OTC parts and components sales	24,714		43,350
Total aftermarket services (4)	61,420		112,263
Total revenue (5)	$	226,870	$	438,910

——————

⁽¹⁾  We operate in two segments: contract operations and aftermarket services. See Note 16(“Segments”) for further details regarding our segments.

⁽²⁾  Primarily relates to fees associated with Archrock-owned non-compressor equipment.

⁽³⁾  Includes $1.4 million and $2.7 million for the three and six months ended June 30, 2018, respectively, related to billable maintenance on Archrock-owned units that was recognized at a point in time. All other revenue within contract operations is recognized over time.

⁽⁴⁾  All service revenue within aftermarket services is recognized over time. All OTC parts and components sales revenue is recognized at a point in time.

Contract Operations

We provide comprehensive contract operations services including the personnel, equipment, tools, materials and supplies to meet our customers’ natural gas compression needs. Based on the operating specifications at the customer location and each customer's unique needs, these services include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining equipment to provide natural gas compression services to our customers.

Natural gas compression services are generally satisfied over time, as the customer simultaneously receives and consumes the benefits provided by these services. Our performance obligation is a series in which the unit of service is one month, as the customer receives substantially the same benefit each month from the services regardless of the type of service activity performed, which may vary. If the transaction price is based on a fixed fee, revenue is recognized monthly on a straight-line basis over the period that we are providing services to the customer. Amounts invoiced to customers for costs associated with moving our compressor assets to a customer site are also included in the transaction price and are amortized over the initial contract term.

Variable consideration exists if customers are billed at a lesser standby rate when a unit is not running. We have elected to apply the invoicing practical expedient to recognize revenue for such variable consideration, as the invoice corresponds directly to the value transferred to the customer based on our performance completed to date. The rate for standby service is lower to reflect the decrease in costs and effort required to provide standby service when a unit is not running.

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We also perform billable maintenance service on our natural gas compression equipment at the customer’s request on an as-needed basis. The performance obligation is satisfied, and revenue is recognized at the agreed-upon transaction price, at the point in time when service is complete and the customer has accepted the work performed and can obtain the remaining benefits of the service that the unit will provide.

As of June 30, 2018, we had $224.3 million of remaining performance obligations related to our contract operations segment. We have elected to apply the practical expedient to not consider the effects of the time value of money, as the expected time between the transfer of services and payment for such services is less than one year. The remaining performance obligations will be recognized through 2021 as follows (in thousands):

	2018		2019		2020		2021		Total
Contract operations remaining performance obligations	$	125,577	$	71,713	$	23,027	$	3,993	$	224,310

Aftermarket Services

We provide a full range of services to support the compression needs of customers. We sell OTC parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

We sell OTC parts and components needed for the maintenance or repair of customer-owned compression equipment. The performance obligation is generally satisfied at the point in time when delivery takes place and the customer obtains control of the part or component. The transaction price is the fixed sales price for the part stated in the contract. Revenue is recognized upon delivery, as we have a present right to payment and the customer has legal title.

Our aftermarket service activities include operations, maintenance, overhaul and reconfiguration services on customer-owned compression equipment on an as-needed basis or as part of a monthly maintenance schedule. The service activities performance obligation is satisfied over time, as the work performed enhances the customer-controlled asset and another entity would not have to substantially re-perform the work we completed if they were to fulfill the remaining performance obligation. The transaction price may be a fixed monthly service fee, a fixed quoted fee or entirely variable, calculated on a time and materials basis.

For service provided based on a fixed monthly fee, the performance obligation is a series in which the unit of service is one month. The customer receives substantially the same benefit each month from the service, regardless of the type of service activity performed, which may vary. As the progress towards satisfaction of the performance obligation is measured based on the passage of time, revenue is recognized monthly based on the fixed fee provided for in the contract.

For service provided based on a quoted fixed fee, progress towards satisfaction of the performance obligation is measured using an input method based on the actual amount of labor and material costs incurred. The amount of the transaction price recognized as revenue each reporting period is determined by multiplying the transaction price by the ratio of actual costs incurred to date to total estimated costs expected for the service. Significant judgment is involved in the estimation of the progress to completion. Any adjustments to the measure of the progress to completion will be accounted for on a prospective basis. Changes to the scope of service is recognized as an adjustment to the transaction price in the period in which the change occurs.

Service provided based on time and materials are generally short-term in nature and labor rates and parts pricing is agreed upon prior to commencing the service. We have elected to use the right-to-invoice practical expedient using an estimated gross margin percentage applied to actual costs incurred. The estimated gross margin percentage is fixed based on historical time and materials-based service. We evaluate the estimated gross margin percentage at the end of each reporting period and adjust the transaction price as appropriate.

We believe these fee- and cost-based inputs fairly depict our efforts to provide aftermarket services and the amount of revenue recognized is representative of the transfer of service and value that the customer will have received as of the reporting date. As of June 30, 2018 we have elected to apply the practical expedient to 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.

18

Contract Balances

Contract operations services are generally billed monthly at the beginning of the month in which service is being provided. For aftermarket services, billings will typically occur when parts are delivered or when service is complete; however, milestone billings may be used in longer-term projects. We recognize a contract asset when we have the right to consideration in exchange for goods or services transferred to a customer when the right is conditioned on something other than the passage of time. We recognize a contract liability when we have an obligation to transfer goods or services to a customer for which we have already received consideration. Freight billings to transport compressor assets and milestone billings on aftermarket services often result in a contract liability.

As of June 30, and January 1, 2018, our receivables from contracts with customers, net of allowance for doubtful accounts were $124.1 million and $115.6 million, respectively. As of June 30, and January 1, 2018, our contract liabilities were $9.5 million and $9.0 million, respectively, which are included in deferred revenue and other long-term liabilities in our condensed consolidated balance sheets. The increase in the contract liability balance was due to the deferral of $8.8 million primarily related to freight billings, partially offset by $8.3 million recognized as revenue during the period primarily related to freight billings and aftermarket services.

4. Discontinued Operations

Spin-off of Exterran Corporation

In 2015 we completed the Spin-off. In order to effect the Spin-off and govern our relationship with Exterran Corporation after the Spin-off, we entered into several agreements with Exterran Corporation, which include but are not limited to the separation and distribution agreement, the tax matters agreement and the supply agreement. Certain terms of these agreements are described as follows:

• The separation and distribution agreement specifies our right to promptly receive payments from a subsidiary of Exterran Corporation based on a notional amount corresponding to payments received by Exterran Corporation’s subsidiaries from PDVSA Gas, in respect of the sale of Exterran Corporation’s subsidiaries’ and joint ventures’ previously nationalized assets after such amounts are collected by Exterran Corporation’s subsidiaries. During the six months ended June 30, 2017we received $19.7 million from Exterran Corporation pursuant to this term of the separation and distribution agreement. Exterran Corporation was due to receive the remaining principal amount as of June 30, 2018 of approximately $20.9 million. The separation and distribution agreement also specifies our right to receive a $25.0 million cash payment from a subsidiary of Exterran Corporation promptly following the occurrence of a qualified capital raise as defined in the Exterran Corporation credit agreement. Such a qualified capital raise occurred on April 4, 2017 and we received a cash payment of $25.0 million on April 11, 2017.

Generally, the separation and distribution agreement provides for cross-indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of Exterran Corporation’s business with Exterran Corporation. Pursuant to the separation and distribution agreement, we and Exterran Corporation generally release the other party from all claims arising prior to the Spin-off that relate to the other party’s business.

• The tax matters agreement governs the respective rights, responsibilities and obligations of Exterran Corporation and us with respect to tax liabilities and benefits, tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings and certain other matters regarding taxes. Subject to the provisions of this agreement Exterran Corporation and we agreed to indemnify the primary obligor of any return for tax periods beginning before and ending before or after the Spin-off (including any ongoing or future amendments and audits for these returns) for the portion of the tax liability (including interest and penalties) that relates to their respective operations reported in the filing. As of June 30, 2018, we classified $6.4 million of unrecognized tax benefits (including interest and penalties) as long-term liability associated with discontinued operations since it relates to operations of Exterran Corporation prior to the Spin-off. We have also recorded an offsetting $6.4 million indemnification asset related to this reserve as long-term assets associated with discontinued operations.

• The supply agreement, which expired November 2017, set forth the terms under which Exterran Corporation provided manufactured equipment, including the design, engineering, manufacturing and sale of natural gas compression equipment, on an exclusive basis to us and the Partnership, subject to certain exceptions. For the six months ended June 30, 2017, we purchased $79.3 million of newly-manufactured compression equipment from Exterran Corporation.

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Other Discontinued Operations Activity

In December 2013, we abandoned our contract water treatment business as part of our continued emphasis on simplification and focus on our core businesses. The abandonment of this business meets the criteria established for recognition as discontinued operations under GAAP. Therefore certain deferred tax assets related to our contract water treatment business have been reported as discontinued operations in our condensed consolidated balance sheets. This business was previously included in our contract operations segment.

The following table summarizes the balance sheet data for discontinued operations (in thousands):

	June 30, 2018		December 31, 2017
	Exterran Corporation		Exterran Corporation		Contract Water Treatment Business		Total
Other current assets	$	300	$	300	$	—	$	300
Total current assets associated with discontinued operations	300		300		—		300
Other assets, net	6,421		6,421		—		6,421
Deferred income taxes (1)	—		—		6,842		6,842
Total assets associated with discontinued operations	$	6,721	$	6,721	$	6,842	$	13,563
Other current liabilities	$	297	$	297	$	—	$	297
Total current liabilities associated with discontinued operations	297		297		—		297
Deferred income taxes	6,421		6,421		—		6,421
Total liabilities associated with discontinued operations	$	6,718	$	6,718	$	—	$	6,718

——————

⁽¹⁾  Reduced by $0.6 million for current period tax amortization and $6.2 million for a valuation allowance recorded as a result of the Merger, whereby we assessed the available positive and negative evidence and concluded, based on the weight of the evidence, that a valuation allowance was required on our resulting net deferred tax asset position, with an offsetting increase to additional paid-in capital in our condensed consolidated balance sheet as of June 30, 2018. See Note 1(“Organization and Summary of Significant Accounting Policies”) for further details of the Merger.

5. Inventory

Inventory consisted of the following amounts (in thousands):

	June 30, 2018		December 31, 2017
Parts and supplies	$	67,092	$	72,528
Work in progress	15,378		18,163
Inventory	$	82,470	$	90,691

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6. Property, Plant and Equipment, Net

Property, plant and equipment, net, consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Compression equipment, facilities and other fleet assets	$	3,261,824		$	3,192,363
Land and buildings	46,667			45,754
Transportation and shop equipment	101,867			100,133
Computer hardware and software	92,156			90,296
Other	11,674			12,419
Property, plant and equipment	3,514,188			3,440,965
Accumulated depreciation	(1,388,901		)	(1,364,038		)
Property, plant and equipment, net	$	2,125,287		$	2,076,927

7. Contract Costs

We capitalize incremental costs to obtain a contract with a customer if we expect to recover those costs.Capitalized costs include commissions paid to our sales force to obtain contract operations contracts. We have applied the practical expedient to expense commissions paid for sales of service contracts and OTC parts and components within our aftermarket services segment as the amortization period is less than one year. As of June 30, and January 1, 2018, we recorded contract costs of $3.2 million and $2.3 million, respectively, associated with sales commissions.

We capitalize costs incurred to fulfill a contract if those costs relate directly to a contract, enhance resources that we will use in satisfying performance obligations and if we expect to recover those costs. Capitalized costs incurred to fulfill our customer contracts include freight charges to transport compressor assets before transferring services to the customer and mobilization activities associated with our contract operations services. As of June 30, and January 1, 2018, we recorded contract costs of $28.0 million and $19.2 million, respectively, associated with freight and mobilization.

Contract operations costs are amortized based on the transfer of service to which the assets relate, which is estimated to be 36 months based on average contract term, including anticipated renewals. We assess periodically whether the 36-month estimate fairly represents the average contract term and adjust as appropriate. Aftermarket services fulfillment costs are recognized based on the percentage-of-completion method applicable to the customer contract. Contract costs associated with commissions are amortized to SG&A. Contract costs associated with freight and mobilization are amortized to cost of sales (excluding depreciation and amortization). During the three and six months ended June 30, 2018, we amortized $0.4 million and $0.7 million, respectively, related to commissions and $3.0 million and $5.6 million, respectively, related to freight and mobilization. During the three and six months ended June 30, 2018, there was no impairment loss recorded in relation to the costs capitalized.

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8. Long-Term Debt

Long-term debt consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Credit Facility	$	—		$	56,000
Partnership Credit Facility	770,500			674,306
Partnership’s 6% senior notes due April 2021	350,000			350,000
Less: Debt discount, net of amortization	(2,162		)	(2,523		)
Less: Deferred financing costs, net of amortization	(2,825		)	(3,338		)
	345,013			344,139
Partnership’s 6% senior notes due October 2022	350,000			350,000
Less: Debt discount, net of amortization	(3,108		)	(3,441		)
Less: Deferred financing costs, net of amortization	(3,542		)	(3,951		)
	343,350			342,608
Long-term debt	$	1,458,863		$	1,417,053

Credit Facility

On April 26, 2018, in connection with the Merger and Amendment No. 1, the Archrock Credit Facility was terminated. Upon termination, we repaid $63.2 million in borrowings and accrued and unpaid interest and fees outstanding. All commitments under the Archrock Credit Facility were terminated and the $15.4 million of letters of credit outstanding under the Archrock Credit Facility as of the Merger were converted to letters of credit under the Partnership Credit Facility. As a result of the termination, we recorded a debt extinguishment loss of $2.5 million.

At December 31, 2017, the weighted average annual interest rate, excluding the effect of interest rate swaps, on the outstanding balance under the Archrock Credit Facility was 3.3%. During the three and six months ended June 30, 2017, we incurred $0.2 million and $0.3 million, respectively, in commitment fees on the daily unused amount of the Archrock Credit Facility. We incurred $0.2 million in commitment fees in 2018 prior to the facility’s termination and were in compliance with all covenants under the Archrock Credit Facility through its closing.

Partnership Credit Facility

The Partnership Credit Facility is a five-year, $1.25 billion asset-based revolving credit facility that will mature on March 30, 2022 except that if any portion of the Partnership’s 6% senior notes due April 2021 are outstanding as of December 2, 2020, then maturity will instead be on December 2, 2020. In March 2017, the Partnership incurred $14.9 million in transaction costs related to the formation of the Partnership Credit Facility. Concurrent with entering into the Partnership Credit Facility, the Partnership expensed $0.6 million of unamortized deferred financing costs and recorded a debt extinguishment loss of $0.3 million related to the termination of its Former Credit Facility.

On February 23, 2018, the Partnership amended the Partnership Credit Facility to, among other things:

• increase the maximum Total Debt to EBITDA ratios, as defined in the Partnership Credit Facility agreement (see below for the revised ratios), effective as of the execution of Amendment No. 1 on February 23, 2018; and

• effective upon completion of the Merger on April 26, 2018:

– increase the aggregate revolving commitment from $1.1 billion to $1.25 billion;

– increase the amount available for the issuance of letters of credit from $25.0 million to $50.0 million;

– increase the basket sizes under certain covenants including covenants limiting our ability to make investments, incur debt, make restricted payments, incur liens and make asset dispositions;

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– name Archrock Services, L.P., one of our subsidiaries, as a borrower under the Partnership Credit Facility and certain of our other subsidiaries as loan guarantors; and

– amend the definition of “Borrowing Base” to include certain assets of ours and our subsidiaries.

The Partnership incurred $3.3 million in transaction costs related to Amendment No. 1 which were included in other long-term assets in our condensed consolidated balance sheet and are being amortized over the term of the Partnership Credit Facility.

As of June 30, 2018, the Partnership had $15.4 million outstanding letters of credit under the Partnership Credit Facility and the applicable margin on amounts outstanding was 3.2%. The weighted average annual interest rate on the outstanding balance under the Partnership Credit Facility, excluding the effect of interest rate swaps, was 5.5% and 4.8% at June 30, 2018 and December 31, 2017, respectively. The Partnership incurred $0.6 million and $0.5 million in commitment fees on the daily unused amount of the Partnership Credit Facility and the Former Credit Facility during the three months ended June 30, 2018 and 2017, respectively, and $1.1 million and $0.9 million during the six months ended June 30, 2018 and 2017, respectively.

The Partnership must maintain the following consolidated financial ratios, as defined in the Partnership Credit Facility agreement:

EBITDA to Interest Expense	2.5 to 1.0
Senior Secured Debt to EBITDA	3.5 to 1.0
Total Debt to EBITDA
Through fiscal year 2018	5.95 to 1.0
Through fiscal year 2019	5.75 to 1.0
Through second quarter of 2020	5.50 to 1.0
Thereafter (1)	5.25 to 1.0

——————

⁽¹⁾  Subject to a temporary increase to 5.5 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the quarter in which the acquisition closes.

As of June 30, 2018, the Partnership had undrawn capacity of $464.1 million under the Partnership Credit Facility. As a result of the ratio requirements above, $287.6 million of the $464.1 million of undrawn capacity was available for additional borrowings as of June 30, 2018. As of June 30, 2018, the Partnership was in compliance with all covenants under the Partnership Credit Facility agreement.

9. Derivatives

We are exposed to market risks associated with changes in interest rates. We use derivative instruments to minimize the risks and costs associated with financial activities by managing our exposure to interest rate fluctuations on a portion of our debt obligations. We do not use derivative instruments for trading or other speculative purposes.

At June 30, 2018, the Partnership was a party to the following interest rate swaps, which were entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates:

Expiration Date	Notional Value (in millions)
May 2019	$	100.0
May 2020	100.0
March 2022	300.0
	$	500.0

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As of June 30, 2018, the weighted average effective fixed interest rate on the interest rate swaps was 1.8%. We have designated these interest rate swaps as cash flow hedging instruments so that any change in their fair values is recognized as a component of other comprehensive income (loss) until the hedged transaction affects earnings. At that time, amounts in other comprehensive income (loss) are reclassified into earnings and presented in the same income statement line item as the earnings effect of the hedged item. Prior to adoption of ASU 2017-12, we performed quarterly calculations to determine whether the swap agreements continued to be highly effective at achieving offsetting changes in cash flows attributable to the hedged risk. As the swap terms substantially coincide with the hedged item and are expected to offset changes in expected cash flows due to fluctuations in the variable rate, we expect the hedging relationship to continue to be highly effective. Upon adoption of ASU 2017-12, we perform subsequent quarterly prospective and retrospective hedge effectiveness assessments qualitatively unless facts and circumstances related to the hedging relationships change such that we can no longer assert qualitatively that the cash flow hedge relationships were and continue to be highly effective. We estimate that $2.8 million of deferred pre-tax gain attributable to interest rate swaps and included in our accumulated other comprehensive income (loss) at June 30, 2018, will be reclassified into earnings as interest income at then-current values during the next twelve months as the underlying hedged transactions occur. 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 this case, the cash settlements for these derivatives are classified as cash flows from financing activities in our condensed consolidated statements of cash flows.

In August 2017, the Partnership amended the terms of certain of its interest rate swap agreements, designated as cash flow hedges against the variability of future interest payments due under the Partnership Credit Facility, with a notional value of $300.0 million. The amended terms adjusted the fixed interest rate and extended the maturity dates to March 2022. These amendments effectively created new derivative contracts and terminated the old derivative contracts. As a result, as of the amendment date, we discontinued the original cash flow hedge relationships on a prospective basis and designated the amended interest rate swaps under new cash flow hedge relationships based on the amended terms. The fair value of the interest rate swaps immediately prior to the execution of the amendments was a liability of $0.7 million. The associated amount in accumulated other comprehensive income (loss) was amortized into interest expense over the original terms of the interest rate swaps through May 2018.

The following tables present the effect of derivative instruments designated as hedging instruments on our consolidated financial position and results of operations (in thousands):

	Fair Value Asset (Liability)
Balance Sheet Location	June 30, 2018		December 31, 2017
Other current assets	$	2,816	$	186
Other long-term assets	9,050		4,490
Accrued liabilities	—		(134		)
	$	11,866	$	4,542

	Pre-tax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives			Location of Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)
Derivatives designated as cash flow hedges:
Interest rate swaps
Three months ended June 30, 2018	$	2,245		Interest expense	$	(39	)
Three months ended June 30, 2017	(336		)	Interest expense	(830		)
Six months ended June 30, 2018	6,941			Interest expense	(513		)
Six months ended June 30, 2017	363			Interest expense	(1,843		)

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	Location and Amount of Gain (Loss) Recognized in Income on Cash Flow Hedging Relationships
	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
	Interest Expense
Total amount of income and expense line items presented in the statement of operations in which the effects of cash flow hedges are recorded	$	23,337	$	45,884
Interest Contracts:
Amount of gain reclassified from accumulated other comprehensive income into income	$	207	$	153

The counterparties to the derivative agreements are major financial institutions. We monitor the credit quality of these financial institutions and do not expect non-performance by any counterparty, although such non-performance could have a material adverse effect on us. The Partnership has no specific collateral posted for its derivative instruments.

10. Fair Value Measurements

The accounting standard for fair value measurements and disclosures establishes a fair value hierarchy that prioritizes the inputs of valuation techniques used to measure fair value into the following three categories:

• Level 1 — Quoted unadjusted prices for identical instruments in active markets to which we have access at the date of measurement.

• Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists or prices vary substantially over time or among brokered market makers.

• Level 3 — Model-derived valuations in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are those inputs that reflect our own assumptions regarding how market participants would price the asset or liability based on the best available information.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

On a quarterly basis, our interest rate swaps are valued based on the income approach (discounted cash flow) using market observable inputs, including forward London Interbank Offered Rate curves. These fair value measurements are classified as Level 2.

The following table presents our interest rate swaps asset and liability measured at fair value on a recurring basis with pricing levels as of the date of valuation (in thousands):

	June 30, 2018		December 31, 2017
Interest rate swaps asset	$	11,866	$	4,676
Interest rate swaps liability	—		(134		)

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2018, we recorded non-recurring fair value measurements related to our idle and previously-culled compressor units. Our estimate of the compressor units’ fair value was primarily based on either 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 impaired compressor units was $1.2 million and $2.6 million at June 30, 2018 and December 31, 2017, respectively. See Note 11(“Long-Lived Asset Impairment”) for further details.

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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 the Partnership Credit Facility approximates fair value due to its variable interest rate. The fair value of these outstanding borrowings was estimated using a discounted cash flow analysis based on interest rates offered on loans with similar terms to borrowers of similar credit quality, which are Level 3 inputs.

The fair value of our fixed rate debt was estimated based on quoted prices in inactive markets and is considered a Level 2 measurement. The following table summarizes the carrying amount and fair value of our fixed rate debt (in thousands):

	June 30, 2018		December 31, 2017
Carrying amount of fixed rate debt (1)	$	688,363	$	686,747
Fair value of fixed rate debt	696,000		702,000

——————

⁽¹⁾  Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 8(“Long-Term Debt”) for further details.

11. Long-Lived 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 compressor units from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

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 compressor units 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 impairment review as recorded in our contract operations segment (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Idle compressor units retired from the active fleet	120		60		165		140
Horsepower of idle compressor units retired from the active fleet	27,000		23,000		50,000		51,000
Impairment recorded on idle compressor units retired from the active fleet	$	6,953	$	5,508	$	11,663	$	13,753

12. Restructuring and Other Charges

As discussed in Note 4(“Discontinued Operations”), we completed the Spin-off in 2015. During the three and six months ended June 30, 2017, we incurred $0.4 million and $0.8 million, respectively, of costs for retention benefits associated with the Spin-off that were directly attributable to Archrock. The restructuring charges associated with the Spin-off are not directly attributable to our reportable segments because they primarily represent costs incurred within the corporate function. No such costs were incurred subsequent to December 31, 2017.

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13. Stock-Based Compensation

Stock Incentive Plan

In April 2013, we adopted the 2013 Plan to provide for the granting of stock options, restricted stock, restricted stock units, stock appreciation rights, performance units, other stock-based awards and dividend equivalent rights to employees, directors and consultants of Archrock. The 2013 Plan is administered by the compensation committee of our board of directors. Under the 2013 Plan, the maximum number of shares of common stock available for issuance pursuant to awards is 10,100,000. Each option and stock appreciation right granted counts as one share against the aggregate share limit, and any share subject to a stock settled award other than a stock option, stock appreciation right or other award for which the recipient pays intrinsic value counts as 1.75 shares against the aggregate share limit. Shares subject to awards granted under the 2013 Plan that are subsequently canceled, terminated, settled in cash or forfeited (excluding shares withheld to satisfy tax withholding obligations or to pay the exercise price of an option) are, to the extent of such cancellation, termination, settlement or forfeiture, available for future grant under the 2013 Plan. Cash-settled awards are not counted against the aggregate share limit. No additional grants have been or may be made under the 2007 Plan following the adoption of the 2013 Plan. Previous grants made under the 2007 Plan will continue to be governed by that plan and the applicable award agreements.

Stock Options

Stock options are granted at fair market value at the grant date, are exercisable according to the vesting schedule established by the compensation committee of our board of directors in its sole discretion and expire no later than seven years after the grant date. Stock options generally vest one-third per year on each of the first three anniversaries of the grant date, subject to continued service through the applicable vesting date.

The following table presents stock option activity during the six months ended June 30, 2018:

	Stock Options (in thousands)		Weighted Average Exercise Price Per Share		Weighted Average Remaining Life (in years)	Aggregate Intrinsic Value (in thousands)
Options outstanding, January 1, 2018	489		$	12.28
Exercised	(30	)	8.79
Canceled	(53	)	13.96
Options outstanding and exercisable, June 30, 2018	406		12.31		1.2	$	1,261

Intrinsic value is the difference between the market value of our stock and the exercise price of each stock option multiplied by the number of stock options outstanding for those stock options where the market value exceeds their exercise price. The total intrinsic value of stock options exercised during six months ended June 30, 2018 was $0.1 million.

Restricted Stock, Stock-Settled Restricted Stock Units, Performance Units, Cash-Settled Restricted Stock Units and Cash Settled Performance Units

For grants of restricted stock, restricted stock units and performance units, we recognize compensation expense over the vesting period equal to the fair value of our common stock at the grant date. Our restricted stock, restricted stock units, and performance units include rights to receive dividends or dividend equivalents. We remeasure the fair value of cash-settled restricted stock units and cash-settled performance units and record a cumulative adjustment of the expense previously recognized. Our obligation related to the cash-settled restricted stock units and cash settled performance units is reflected as a liability in our condensed consolidated balance sheets. Restricted stock, stock-settled restricted stock units, cash-settled restricted stock units and cash-settled performance units generally vest one-third per year on dates as specified in the applicable award agreement, subject to continued service through the applicable vesting date. Stock-settled performance units cliff vest at the end of the performance period as specified in the terms of the applicable award agreement, subject to continued service through the applicable vesting date.

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The following table presents restricted stock, restricted stock unit, performance unit, cash-settled restricted stock unit and cash- settled performance unit activity during the six months ended June 30, 2018:

	Shares (in thousands)		Weighted Average Grant Date Fair Value Per Share
Non-vested awards, January 1, 2018	1,440		$	10.39
Granted	1,098		9.52
Converted (1)	140		7.03
Vested	(503	)	9.56
Canceled	(47	)	11.33
Non-vested awards, June 30, 2018 (2)	2,128		9.89

——————

⁽¹⁾  Reflects conversion of Partnership phantom units into Archrock restricted stock units pursuant to the Merger See “Partnership Long-Term Incentive Plan” section below for detail regarding the conversion of awards.

⁽²⁾  Non-vested awards as of June 30, 2018 are comprised of 272,000 cash-settled restricted stock units and cash-settled performance units and 1,856,000 restricted shares and stock-settled performance units.

As of June 30, 2018, we expect $16.4 million of unrecognized compensation cost related to unvested restricted stock, stock-settled restricted stock units, performance units, cash-settled restricted stock units and cash-settled performance units to be recognized over the weighted-average period of 2.5 years.

Partnership Long-Term Incentive Plan

In April 2017, the Partnership adopted the 2017 Partnership LTIP to provide for the benefit of employees, directors and consultants of the Partnership, us and our respective affiliates. The 2017 Partnership LTIP provided for the issuance of unit options, unit appreciation rights, restricted units, phantom units, performance awards, bonus awards, distribution equivalent rights, cash awards and other unit based awards. Previous grants made under the 2006 Partnership LTIP continued to be governed by the 2006 Partnership LTIP and the applicable award agreements. We recognized compensation expense over the vesting period equal to the fair value of the Partnership’s common units at the grant date. Phantom units granted under the 2017 and 2006 LTIP may include nonforfeitable tandem distribution equivalent rights to receive cash distributions on unvested phantom units in the quarter in which distributions are paid on common units. Phantom units generally vested one-third per year on dates as specified in the applicable award agreements subject to continued service through the applicable vesting date. During the six months ended June 30, 2018, 53,091 phantom units vested with a weighted average grant date fair value per unit of $11.24.

Pursuant to the Merger, all outstanding phantom units previously granted under the 2017 and 2006 Partnership LTIP were converted into comparable awards based on Archrock’s common shares. As such, all outstanding phantom units were converted, effective as of the closing of the Merger, into Archrock restricted stock units. See Note 1 (“Organization and Summary of Significant Accounting Policies”) for further details regarding the Merger. Each Archrock restricted stock unit will be subject to the same vesting, forfeiture and other terms and conditions applicable to the converted Partnership phantom units. Under Accounting Standards Codification Topic 718, Compensation - Stock Compensation, we determined that there was no additional compensation cost to record as the conversion of awards did not result in incremental fair value.

14. Cash Dividends

The following table summarizes our dividends per common share:

Declaration Date	Payment Date	Dividends per Common Share		Total Dividends (in thousands)
January 19, 2017	February 15, 2017	$	0.12	$	8,458
April 26, 2017	May 16, 2017	0.12		8,534
July 26, 2017	August 15, 2017	0.12		8,536
October 20, 2017	November 15, 2017	0.12		8,536
January 18, 2018	February 14, 2018	0.12		8,532
April 25, 2018	May 15, 2018	0.12		15,486

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On July 25, 2018, our board of directors declared a quarterly dividend of $0.132 per share of common stock to be paid on August 14, 2018 to stockholders of record at the close of business on August 7, 2018.

15. Commitments and Contingencies

Performance Bonds

In the normal course of business we have issued performance bonds to various state authorities that ensure payment of certain obligations. We have also issued a bond to protect our 401(k) retirement plan against losses caused by acts of fraud or dishonesty. The bonds have expiration dates in 2018 through the first quarter of 2020 and maximum potential future payments of $2.3 million. As of June 30, 2018, we were in compliance with all obligations to which the performance bonds pertain.

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, 2018 and December 31, 2017, we accrued $2.5 million and $1.7 million, respectively, 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 for the period in which the resolution occurs.

Subject to the provisions of the tax matters agreement between Exterran Corporation and us, both parties agreed to indemnify the primary obligor of any return for tax periods beginning before and ending before or after the Spin-off (including any ongoing or future amendments and audits for these returns) for the portion of the tax liability (including interest and penalties) that relates to their respective operations reported in the filing. The tax contingencies mentioned above relate to tax matters for which we are responsible in managing the audit. As of both June 30, 2018 and December 31, 2017, we recorded an indemnification liability (including penalties and interest), in addition to the tax contingency above, of $1.6 million for our share of non-income based tax contingencies related to audits being managed by Exterran Corporation.

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. In addition, we have a minimal amount of insurance on our offshore assets. 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.

Indemnification Obligations

In connection with the Spin-off, we entered into a separation and distribution agreement which provides for cross-indemnities between Exterran Corporation’s operating subsidiary and us and established procedures for handling claims subject to indemnification and related matters. Generally, the separation and distribution agreement provides for cross-indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of Exterran Corporation’s business with Exterran Corporation. Pursuant to the separation and distribution agreement, we and Exterran Corporation will generally release the other party from all claims arising prior to the Spin-off that relate to the other party’s business.

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Litigation and Claims

In the ordinary course of business, we are involved in various pending or threatened legal actions. While management is unable to predict the ultimate outcome of these actions, it believes 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.

Heavy Equipment

In 2011, the Texas Legislature enacted changes related to the appraisal of natural gas compressors for ad valorem tax purposes by expanding the definitions of “Heavy Equipment Dealer” and “Heavy Equipment” effective from the beginning of 2012. Under the revised Heavy Equipment Statutes, we believe we are a Heavy Equipment Dealer, that our natural gas compressors are Heavy Equipment and that we, therefore, are required to file our ad valorem taxes under this new methodology. We further believe that our natural gas compressors are taxable under the Heavy Equipment Statutes in the counties where we maintain a business location and keep natural gas compressors instead of where the compressors may be located on January 1 of a tax year. As a result of this new methodology, our ad valorem tax expense (which is reflected in our condensed consolidated statements of operations as a component of cost of sales (excluding depreciation and amortization)) includes a benefit of $9.5 million during the six months ended June 30, 2018. Since the change in methodology became effective in 2012, we have recorded an aggregate benefit of $87.7 million as of June 30, 2018, of which $21.4 million has been agreed to by a number of appraisal review boards and county appraisal districts and $66.3 million has been disputed and is currently in litigation. A large number of appraisal review boards denied our position, although some accepted it, and our wholly owned subsidiary, Archrock Services Leasing LLC, formerly known as EES Leasing, and the Partnership’s subsidiary, Archrock Partners Leasing LLC, formerly known as EXLP Leasing, filed 176 petitions for review in the appropriate district courts with respect to the 2012 tax year, 109 petitions for review in the appropriate district courts with respect to the 2013 tax year, 115 petitions for review in the appropriate district courts with respect to the 2014 tax year, 120 petitions for review in the appropriate district courts with respect to the 2015 tax year, 113 petitions for review in the appropriate district courts with respect to the 2016 tax year and 113 petitions for review in the appropriate district courts with respect to the 2017 tax year.

To date, only five cases have advanced to the point of trial or submission of summary judgment motions on the merits, and only three cases have been decided, with two of the decisions having been rendered by the same presiding judge. All three of those decisions were appealed, and all three of the appeals have been decided by intermediate appellate courts.

On October 17, 2013, the 143rd Judicial District Court of Loving County, Texas ruled in EXLP Leasing LLC & EES Leasing LLC v. Loving County Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the district court further held that the Heavy Equipment Statutes were unconstitutional as applied to EES Leasing’s and EXLP Leasing’s compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Eighth Court of Appeals in El Paso, Texas. On September 23, 2015, the Eighth Court of Appeals ruled in EES Leasing’s and EXLP Leasing’s favor by overruling the 143rd District Court’s constitutionality ruling. The Eighth Court of Appeals also ruled, however, that EES Leasing’s and EXLP Leasing’s natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue.

On October 28, 2013, the 143rd Judicial District Court of Ward County, Texas ruled in EES Leasing LLC & EXLP Leasing LLC v. Ward County Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the court held that the Heavy Equipment Statutes were unconstitutional as applied to their compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Eighth Court of Appeals in El Paso, Texas, and the Ward County Appraisal District cross-appealed the district court’s rulings that EES Leasing’s and EXLP Leasing’s compressors qualify as Heavy Equipment. On September 23, 2015, the Eighth Court of Appeals ruled in EES Leasing’s and EXLP Leasing’s favor by overruling the 143rd District Court’s constitutionality ruling and affirming its ruling that EES Leasing’s and EXLP Leasing’s compressors qualify as Heavy Equipment. The Eighth Court of Appeals also ruled, however, that EES Leasing’s and EXLP Leasing’s natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue.

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The Ward County Appraisal District and Loving County Appraisal District each filed (on January 27, 2016 and February 10, 2016, respectively) a petition asking the Texas Supreme Court to review its respective Eighth Court of Appeals decision. On March 11, 2016, EES Leasing and EXLP Leasing filed responses to the appraisal districts’ petitions and cross-petitions for review in each case asking the Texas Supreme Court to also review the Eighth Court of Appeals’ determination that natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue. The Ward County Appraisal District filed its response to EES Leasing’s and EXLP Leasing’s cross-petition on June 6, 2016, and EES Leasing and EXLP Leasing filed their reply on June 21, 2016. The Loving County Appraisal District filed its response to EES Leasing’s and EXLP Leasing’s cross-petition on May 27, 2016, and EES Leasing and EXLP Leasing filed their reply on June 10, 2016.

On March 18, 2014, the 10th Judicial District Court of Galveston, Texas ruled in EXLP Leasing LLC & EES Leasing LLC v. Galveston Central Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the court held the Heavy Equipment Statutes unconstitutional as applied to their compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Fourteenth Court of Appeals in Houston, Texas. On August 25, 2015, the Fourteenth Court of Appeals issued a ruling stating that EES Leasing’s and EXLP Leasing’s compressors are taxable in the counties where they were located on January 1 of the tax year at issue, and it remanded the case to the district court for further evidence on the issue of whether the Heavy Equipment Statutes are constitutional as applied to EES Leasing’s and EXLP Leasing’s compressors. On November 24, 2015, EES Leasing and EXLP Leasing filed a petition asking the Texas Supreme Court to review this decision. On March 21, 2016, the Galveston Central Appraisal District filed a response to EES Leasing’s and EXLP Leasing’s petition for review, and EES Leasing and EXLP Leasing filed their reply on April 26, 2016.

In EES Leasing v. Irion County Appraisal District, EES Leasing and the appraisal district each filed motions for summary judgment in the 51st District Court concerning the applicability and constitutionality of the Heavy Equipment Statutes. On May 20, 2014, the district court entered an order denying both motions for summary judgment, holding that a fact issue existed as to the applicability of the Heavy Equipment Statutes to the one compressor at issue. The presiding judge for the 51st District Court has since consolidated the 2012 tax year case with EES Leasing’s 2013 tax year case, which also included EXLP Leasing as a party. On August 27, 2015, the presiding judge abated the combined case, EES Leasing LLC and EXLP Leasing LLC v. Irion County Appraisal District, until the final resolution of the appellate cases considering the constitutionality of the Heavy Equipment Statutes, or further order of the court.

EES Leasing and EXLP Leasing also filed a motion for summary judgment in EES Leasing LLC & EXLP Leasing LLC v. Harris County Appraisal District, pending in the 189th Judicial District Court of Harris County, Texas. The court heard arguments on the motion on December 6, 2013 but has yet to rule. No trial date has been set.

On June 3, 2015, the Fourth Court of Appeals in San Antonio, Texas issued a decision reversing the 406th District Court’s dismissal of EES Leasing’s and EXLP Leasing’s tax appeals for want of jurisdiction. In EXLP Leasing LLC et. al v. Webb County Appraisal District, United Independent School District (“United ISD”) intervened as a party in interest and sought to dismiss the lawsuit arguing that the district court was without jurisdiction to hear the appeal. Under Section 42.08(b) of the Texas Tax Code, a property owner must pay before the delinquency date the lesser of (1) the amount of taxes due on the portion of the taxable value of the property that is not in dispute or (2) the amount of taxes due on the property under the order from which the appeal is taken. EES Leasing and EXLP Leasing paid zero taxes to Webb County because the entire amount of tax assessed by Webb County was in dispute. Instead, as required by the Heavy Equipment Statutes and Texas Comptroller forms, EES Leasing and EXLP Leasing paid taxes on the compressors at issue to Victoria County, where they maintain their place of business and keep natural gas compressors. The Webb County Appraisal District and United ISD contested EES Leasing’s and EXLP Leasing’s position that the Heavy Equipment Statutes contain situs provisions requiring that taxes be paid where the dealer has a business location and keeps its natural gas compressors, instead arguing that taxes are payable to the county where each compressor is located as of January 1 of the tax year at issue. The district court granted United ISD’s motion to dismiss on April 1, 2014 and declined EES Leasing’s and EXLP Leasing’s motion to reconsider. The Fourth Court of Appeals reversed, holding that, based on the plain meaning of Section 42.08(b)(1), and because the entire amount was in dispute, EES Leasing and EXLP Leasing were not required to prepay disputed taxes to invoke the trial court’s jurisdiction. The Fourth Court of Appeals denied United ISD’s request for a rehearing. On September 29, 2015, United ISD filed a petition for review in the Texas Supreme Court. On December 4, 2015, the Texas Supreme Court denied United ISD’s petition for review.

United ISD has four delinquency lawsuits concerning the 2012 tax year pending against EES Leasing and EXLP Leasing in the 49th District Court of Webb County, Texas. The cases have been abated pending the resolution of EES Leasing’s and EXLP Leasing’s 2012 tax year case pending in the 406th Judicial District Court of Webb County, Texas.

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On September 2, 2016, the Texas Supreme Court requested that consolidated merits briefs be filed in EES Leasing’s and EXLP Leasing’s cases against the Loving County Appraisal District, Ward County Appraisal District, and Galveston Central Appraisal District, as well as two similar cases involving different taxpayers. On September 19, 2016, the Supreme Court entered a consolidated briefing schedule for the five cases. Consolidated briefing was completed on February 7, 2017.

On March 10, 2017, the Texas Supreme Court granted EXLP Leasing’s and EES Leasing’s petition for review in EXLP Leasing LLC & EES Leasing LLC v. Galveston Central Appraisal District. The case was argued before the Texas Supreme Court on October 10, 2017. On March 2, 2018, the Texas Supreme Court ruled in favor of EXLP Leasing and EES Leasing by reversing the Fourteenth Court of Appeals’ decision. In doing so, the Supreme Court upheld the validity of the Heavy Equipment Rules and held that compressors are taxable in the county of EXLP Leasing’s and EES Leasing’s business location, not where each compressor is located on January 1. On April 2, 2018, the Galveston Central Appraisal District filed a motion for rehearing. On April 3, 2018, EXLP Leasing and EES Leasing filed a letter stating that they do not plan to file a response to Galveston Central Appraisal District’s motion for rehearing unless the Texas Supreme Court requests they do so.

We continue to believe that the revised statutes are constitutional as applied to natural gas compressors and that under the revised statutes our natural gas compressors are taxable in the counties where we maintain a business location and keep natural gas compressors. Recognizing the similarity of the issues and that these cases will ultimately be resolved by the Texas appellate courts, most of the remaining 2012-2017 district court cases have been formally or effectively abated pending final judgment from the Texas Supreme Court.

If we are unsuccessful in our litigation, we would be required to pay ad valorem taxes up to the aggregate benefit we have recorded, and the additional ad valorem tax payments may also be subject to substantial penalties and interest. In addition, while we do not expect the ultimate determination of the issue of where the natural gas compressors are taxable under the Heavy Equipment Statutes would have an impact on the amount of taxes due, we could be subject to substantial penalties if we are unsuccessful on this issue. Also, if we are unsuccessful in our litigation, or if legislation is enacted in Texas that repeals or alters the Heavy Equipment Statutes such that in the future we do not qualify as a Heavy Equipment Dealer or our compressors do not qualify as Heavy Equipment, then we would likely be required to pay these ad valorem taxes under the old methodology going forward, which would increase our quarterly cost of sales expense up to approximately the amount of our then-most recent quarterly benefit recorded. If this litigation is resolved against us in whole or in part, or if in the future we do not qualify as a Heavy Equipment Dealer or our compressors do not qualify as Heavy Equipment because of new or revised Texas statutes, we will incur additional taxes and could be subject to substantial penalties and interest, which would impact our future results of operations, financial position and cash flows, including our ability to pay dividends.

Other

In addition, the SEC has been conducting an investigation in connection with certain previously disclosed errors and possible irregularities at one of our former international operations. We and Exterran Corporation are cooperating with the SEC in the investigation, which has included, among other things, responding to subpoenas for documents and testimony related to the restatement of prior period consolidated and combined financial statements and related disclosures and compliance with the FCPA, which were also being provided to the DOJ at its request. The SEC staff has provided notice that they have concluded their investigation relating to compliance with the FCPA and that they do not intend to recommend an enforcement action concerning compliance with the FCPA, and the DOJ has also provided notice that it does not intend to proceed with any further investigation or enforcement.

16. Segments

We manage our business segments primarily based upon 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 part sales and normal maintenance services to full operation of a customer’s owned assets.

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

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The following table presents revenue and other financial information by segment during the three and six months ended June 30, 2018 and 2017 (in thousands): 

	Contract Operations		Aftermarket Services		Total
Three months ended June 30, 2018
Revenue	$	165,450	$	61,420	$	226,870
Gross margin	97,641		10,627		108,268
Three months ended June 30, 2017
Revenue	$	151,114	$	46,868	$	197,982
Gross margin	88,871		7,259		96,130
Six months ended June 30, 2018
Revenue	$	326,647	$	112,263	$	438,910
Gross margin	194,243		19,133		213,376
Six months ended June 30, 2017
Revenue	$	301,098	$	86,769	$	387,867
Gross margin	174,758		13,428		188,186

The following table reconciles total gross margin to income (loss) before income taxes (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Total gross margin	$	108,268		$	96,130		$	213,376		$	188,186
Less:
Selling, general and administrative	26,649			25,162			54,157			52,715
Depreciation and amortization	43,331			47,248			87,786			95,020
Long-lived asset impairment	6,953			5,508			11,663			13,753
Restatement and other charges	(1,076		)	1,920			(591		)	2,721
Restructuring and other charges	—			366			—			823
Interest expense	23,337			22,504			45,884			43,925
Debt extinguishment costs	2,450			—			2,450			291
Merger-related costs	5,686			—			9,811			—
Other income, net	(1,644		)	(962		)	(2,789		)	(1,756		)
Income (loss) before income taxes	$	2,582		$	(5,616	)	$	5,005		$	(19,306	)

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

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited financial statements and the notes thereto included in the Financial Statements of this Quarterly Report on Form 10-Q and in conjunction with our 2017 Form 10-K.

Disclosure Regarding Forward-Looking Statements

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

Such forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from those anticipated as of the date of this Quarterly Report on Form 10-Q. Although we believe that the expectations reflected in these forward-looking statements are based on reasonable assumptions, no assurance can be given that these expectations will prove to be correct. Known material factors that could cause our actual results to differ materially from the expectations reflected in these forward-looking statements include the risk factors described in our 2017 Form 10-K, and those set forth from time to time in our filings with the SEC, which are available through our website at www.archrock.com and through the SEC’s website at www.sec.gov, as well as the following risks and uncertainties:

• the risk that cost savings, tax benefits and any other synergies from the Merger may not be fully realized or may take longer to realize than expected;

• the impact and outcome of pending and future litigation, including litigation, if any, relating to the Merger;

• conditions in the oil and natural gas industry, including a sustained decrease in the level of supply or demand for oil or natural gas or a sustained low price of oil or natural gas;

• the success of our subsidiary, the Partnership, including the amount of cash distributions received from the Partnership;

• our reduced profit margins or the loss of market share resulting from competition or the introduction of competing technologies by other companies;

• the spin-off of our international contract operations, international aftermarket services and global fabrication businesses into an independent, publicly-traded company, Exterran Corporation;

• changes in economic or political conditions, including terrorism and legislative changes;

• the inherent risks associated with our operations, such as equipment defects, impairments, malfunctions and natural disasters;

• the loss of the Partnership’s status as a partnership for U.S. federal income tax purposes;

• the risk that counterparties will not perform their obligations under our financial instruments;

• the financial condition of our customers;

• our ability to timely and cost-effectively obtain components necessary to conduct our business;

• employment and workforce factors, including our ability to hire, train and retain key employees;

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• our ability to implement certain business and financial objectives, such as:

–winning profitable new business;

–growing our asset base and enhancing asset utilization;

–integrating acquired businesses;

–generating sufficient cash; and

–accessing the capital markets at an acceptable cost;

• liability related to the use of our services;

• changes in governmental safety, health, environmental or other regulations, which could require us to make significant expenditures;

•the effectiveness of our control environment, including the identification of additional control deficiencies;

•the results of reviews, investigations or other proceedings by government authorities;

•the results of any shareholder actions relating to the restatement of our financial statements that may be filed;

• the potential additional costs related to our restatement, including cost-sharing with Exterran Corporation and the costs of addressing reviews, investigations or other proceedings by government authorities or shareholder actions; and

• our level of indebtedness and ability to fund our business.

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

Overview

We are a pure play U.S. natural gas contract operations services business and the leading provider of natural gas compression services to customers in the oil and natural gas 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 primary business segments: contract operations and aftermarket services. In our contract operations business, we use our owned fleet of natural gas compression equipment to provide operations services to our customers. In our aftermarket services business, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

Recent Business Developments

Merger Transaction

On April 26, 2018, we completed the acquisition of all of the outstanding common units of the Partnership and the Partnership became our indirect wholly-owned subsidiary. In connection with the closing of the Merger, we issued 57.6 million shares of our common stock to acquire the 41.2 million common units of the Partnership not owned by us prior to the Merger at a fixed exchange ratio of 1.40 shares of our common stock for each Partnership common unit, for total implied consideration of $625.3 million. Additionally, the incentive distribution rights in the Partnership, which were previously owned indirectly by us, were canceled and ceased to exist. As a result of the Merger, common units of the Partnership are no longer publicly traded. See Note 1(“Organization and Summary of Significant Accounting Policies”) to our Financial Statements for further details of the Merger.

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Amendment to the Partnership Credit Facility and Termination of the Archrock Credit Facility

On February 23, 2018, the Partnership amended the Partnership Credit Facility to, among other things, increase the maximum Total Debt to EBITDA ratio. In addition, on April 26, 2018, concurrent with the Merger and certain terms within Amendment No. 1, the Partnership increased the aggregate revolving commitment under the Partnership Credit Facility to $1.25 billion and we terminated the Archrock Credit Facility and all commitments under that facility. See “Liquidity and Capital Resources - Financial Resources” below and Note 8(“Long-Term Debt”) to the Financial Statements for further details of Amendment No. 1 and the termination of the Archrock Credit Facility.

Trends and Outlook

Our business environment and corresponding operating results are affected by the level of energy industry spending for the exploration, development and production of oil and natural gas reserves in the U.S. Spending by oil and natural gas exploration and production companies is dependent upon these companies’ forecasts regarding the expected future supply, demand and pricing of oil and natural gas products as well as their estimates of risk-adjusted costs to find, develop and produce reserves. For example, oil and natural gas exploration and development activity and the number of well completions typically decline when there is a significant reduction in oil and natural gas prices or significant instability in energy markets. Our revenue, earnings and financial position are affected by, among other things, market conditions that impact demand and pricing for natural gas compression, our customers’ decisions between using our services or our competitors’ services, our customers’ decisions regarding whether to own and operate the equipment themselves and the timing and consummation of any acquisition of additional contract operations customer service agreements and equipment from third parties. Although our contract operations business is typically less impacted by commodity prices than certain other oil and natural gas service providers, changes in oil and natural gas exploration and production spending normally result in changes in demand for our services.

Natural gas consumption in the U.S. for the twelve months ended April 30, 2018 increased 6% to 28,505 Bcf compared to 26,973 Bcf for the twelve months ended April 30, 2017. The EIA forecasts that total U.S. natural gas consumption will increase7% in 2018 compared to 2017. The EIA estimates that the U.S. natural gas consumption level will be 32 Tcf in 2040, or 18% of the projected worldwide total of 177 Tcf.

Natural gas marketed production in the U.S. for the twelve months ended April 30, 2018increased6% to 29,797 Bcf compared to 28,083 Bcf for the twelve months ended April 30, 2017. The EIA forecasts that total U.S. natural gas marketed production will increase11% in 2018 compared to 2017. The EIA estimates that the U.S. natural gas production level will be 38 Tcf in 2040, or 21% of the projected worldwide total of 177 Tcf.

Historically, oil and natural gas prices and the level of drilling and exploration activity in the U.S. have been unpredictable. The average price for natural gas, based on daily Henry Hub spot prices, in the first half of 2018 was $2.96 per MMBtu compared to $3.05 per MMBtu in the first half of 2017, with spot prices of $2.96 per MMBtu and $2.98 per MMBtu at June 29, 2018 and June 30, 2017, respectively. The U.S. liquefied natural gas composite price was $7.49 per MMBtu and $6.25 per MMBtu in April 2018 and April 2017, respectively, and the average price in the twelve months ended April 30, 2018 was $7.22 per MMBtu compared to $5.82 per MMBtu in the twelve months ended April 30, 2017. The West Texas Intermediate crude oil spot price was $74.13 per barrel and $46.02 per barrel at June 29, 2018 and June 30, 2017, respectively, and the average crude oil price in the first half of 2018 was $65.55 per barrel compared to $49.85 per barrel in the first half of 2017.

Increased stability of oil and natural gas prices in 2017 and 2018 has contributed to increased production, which has resulted in increased new orders for our compression services in 2017 and thus far in 2018. Additionally, we increased our investment in new fleet units in 2017 and thus far in 2018 to take advantage of improved market conditions. As a result of these increased orders and investment, our contract operations revenue and average operating horsepower increased8% and 7%, respectively, in the six months ended June 30, 2018 compared to the six months ended June 30, 2017. Our aftermarket services business also benefited from improved market conditions and continued the recovery begun in 2017 into 2018 with a 29% increase in revenue in the six months ended June 30, 2018 compared to the six months ended June 30, 2017.

According to the Barclays 2018 E&P Spending Survey Update, North America upstream spending is expected to increase by 9% in 2018. Due to this forecasted increase in customer spending in 2018 and the significant increase in new orders for compression services and investment in new fleet units in 2017 and thus far into 2018, we anticipate an increase in average operating horsepower during 2018 compared to 2017 as well as increased revenue in our contract operations and aftermarket services businesses.

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According to Drillinginfo, natural gas production is expected to increase approximately 18% through 2022, with further increases anticipated beyond then. We believe that significantly improved quantities, accessibility and price stability of natural gas in the U.S. will continue to drive higher levels of demand for liquefied natural gas exports, natural gas exports via pipeline to Mexico and natural gas use in power generation as well as use as a petrochemical feedstock, which will in turn lead to a significant increase in demand for compression services.

Operating Highlights

The following table summarizes our available and operating horsepower and horsepower utilization (in thousands, except percentages):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Total available horsepower (at period end)(1)	3,881		3,827		3,881		3,827
Total operating horsepower (at period end)(2)	3,354		3,118		3,354		3,118
Average operating horsepower	3,342		3,096		3,316		3,104
Horsepower utilization:
Spot (at period end)	86	%	81	%	86	%	81	%
Average	86	%	81	%	86	%	81	%

——————

⁽¹⁾  Defined as idle and operating horsepower. New compressor units completed by a third party manufacturer that have been delivered to us are included in the fleet.

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

Non-GAAP Financial Measures

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

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

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

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The following table reconciles net income (loss) to gross margin (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net income (loss)	$	4,149		$	(4,036	)	$	6,218		$	(18,049	)
Selling, general and administrative	26,649			25,162			54,157			52,715
Depreciation and amortization	43,331			47,248			87,786			95,020
Long-lived asset impairment	6,953			5,508			11,663			13,753
Restatement and other charges	(1,076		)	1,920			(591		)	2,721
Restructuring and other charges	—			366			—			823
Interest expense	23,337			22,504			45,884			43,925
Debt extinguishment costs	2,450			—			2,450			291
Merger-related costs	5,686			—			9,811			—
Other income, net	(1,644		)	(962		)	(2,789		)	(1,756		)
Benefit from income taxes	(1,567		)	(1,580		)	(1,213		)	(1,257		)
Gross margin	$	108,268		$	96,130		$	213,376		$	188,186

Financial Results of Operations

Summary of Results

Revenue. Revenue was $226.9 million and $198.0 million during the three months ended June 30, 2018 and 2017, respectively, and $438.9 million and $387.9 million during the six months ended June 30, 2018 and 2017, respectively. The increase in revenueduring the three and six months ended June 30, 2018 compared to the three and six months ended June 30, 2017 was due to increases in revenue from our contract operations and aftermarket services businesses. See “Contract Operations” and “Aftermarket Services” below for further details.

Net income (loss) attributable to Archrock stockholders. Net income attributable to Archrock stockholders was $1.9 million and net loss attributable to Archrock stockholders was $6.7 million during the three months ended June 30, 2018 and 2017, respectively. Net loss attributable to Archrock stockholders was $1.9 million and $18.4 million during the six months ended June 30, 2018 and 2017, respectively.

The change from net loss to net income attributable to Archrock stockholders during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily driven by the increase in gross margin from our contract operations and aftermarket services businesses and decreases in depreciation and amortization and restatement and other charges, partially offset by Merger-related costs and debt extinguishment costs.

The decrease in net loss attributable to Archrock stockholders during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily driven by the increase in gross margin from our contract operations and aftermarket services businesses and decreases in depreciation and amortization, restatement and other charges and long-lived asset impairment, partially offset by Merger-related costs and increases in net income attributable to the noncontrolling interest, debt extinguishment costs and interest expense.

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Three Months Ended June 30, 2018 Compared to Three Months Ended June 30, 2017

Contract Operations

(dollars in thousands)

	Three Months Ended June 30,						Increase
	2018			2017			(Decrease)
Revenue	$	165,450		$	151,114		9	%
Cost of sales (excluding depreciation and amortization expense)	67,809			62,243			9	%
Gross margin	$	97,641		$	88,871		10	%
Gross margin percentage (1)	59		%	59		%	—	%

——————

⁽¹⁾  Defined as gross margin divided by revenue.

The increase in revenue during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to an 8% increase in average operating horsepower and an increase in rates resulting from an increase in customer demand driven by improved market conditions. The increase in revenue was slightly offset by the deferral of rebillable freight revenue as a result of the adoption of the Revenue Recognition Update.

Gross margin increased during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 due to the increase in revenue mentioned above, partially offset by the increase in cost of sales that was primarily driven by increases in costs associated with the increase in average operating horsepower, the mobilization of compressor units, freight expense, lube oil expense and other operating costs of providing our contract operations services. The increase in cost of sales was partially offset by the capitalization of freight and mobilization costs incurred to fulfill contracts prior to the transfer of service as a result of the adoption of the Revenue Recognition Update.

Aftermarket Services

(dollars in thousands)

	Three Months Ended June 30,						Increase
	2018			2017			(Decrease)
Revenue	$	61,420		$	46,868		31	%
Cost of sales (excluding depreciation and amortization expense)	50,793			39,609			28	%
Gross margin	$	10,627		$	7,259		46	%
Gross margin percentage	17		%	15		%	2	%

The increase in revenue during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to increases in part sales and service activities as well as the change to recognize revenue for service activities over time as a result of the adoption of the Revenue Recognition Update.

Gross margin increased during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 due to the increase in revenue mentioned above, partially offset by the increase in cost of sales. The increase in cost of sales was primarily driven by the increase in part sales and service activities as well as the change to recognize costs associated with service activities over time as a result of the adoption of the Revenue Recognition Update. Gross margin percentage increased during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 primarily due to higher labor utilization as a result of the increase in activity mentioned above.

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Costs and Expenses

(dollars in thousands)

	Three Months Ended June 30,						Increase
	2018			2017			(Decrease)
Selling, general and administrative	$	26,649		$	25,162		6	%
Depreciation and amortization	43,331			47,248			(8	)%
Long-lived asset impairment	6,953			5,508			26	%
Restatement and other charges	(1,076		)	1,920			(156	)%
Restructuring and other charges	—			366			(100	)%
Interest expense	23,337			22,504			4	%
Debt extinguishment costs	2,450			—			n/a
Merger-related costs	5,686			—			n/a
Other income, net	(1,644		)	(962		)	71	%

Selling, general and administrative. The increase in SG&A during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to a $1.4 million increase in compensation and benefits and a $0.6 million increase in professional expenses, partially offset by a $0.6 million decrease in facility rent expense and a $0.6 million decrease in bad debt expense.

Depreciation and amortization. The decrease in depreciation and amortization expense during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to a decrease in depreciation expense resulting from certain assets reaching the end of their depreciable lives as well as the impact of asset impairments during 2017 and early 2018, partially offset by an increase in depreciation expense associated with fixed asset additions.

Long-lived asset impairment. During the three months ended June 30, 2018 and 2017, we reviewed the future deployment of our idle compression assets for units that were not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. In addition, we evaluated for impairment idle units that had been culled from our fleet in prior years and were available for sale. See Note 11(“Long-Lived Asset Impairment”) to our Financial Statements for further details.

The following table presents the results of our impairment review (dollars in thousands):

	Three Months Ended June 30,
	2018		2017
Idle compressor units retired from the active fleet	120		60
Horsepower of idle compressor units retired from the active fleet	27,000		23,000
Impairment recorded on idle compressor units retired from the active fleet	$	6,953	$	5,508

Restatement and other charges. During the three months ended June 30, 2018 we recorded $1.6 million for the expected recovery of shared professional and legal fees incurred related to the restatement of prior period financial statements and disclosures and the related matters described in Note 15(“Commitments and Contingencies”) to our Financial Statements. We were billed $0.5 million and $1.9 million for our share of these fees during the three months ended June 30, 2018 and 2017, respectively.

Restructuring and other charges. As discussed in Note 4(“Discontinued Operations”) to our Financial Statements, we completed the Spin-off in 2015. During the three months ended June 30, 2017, we incurred $0.4 million of costs associated with the Spin-off which were directly attributable to Archrock. No such costs were incurred subsequent to December 31, 2017.

Interest expense. The increase in interest expense during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to increases in the weighted average effective interest rate and average outstanding balance of long-term debt.

Debt extinguishment costs. We recorded a debt extinguishment loss of $2.5 million during the three months ended June 30, 2018 as a result of the termination of the Archrock Credit Facility. See Note 8(“Long-Term Debt”) for further details.

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Merger-related costs. We incurred $5.7 million of Merger-related costs consisting of financial advisory, legal and other professional fees during the three months ended June 30, 2018.

Other income, net. The increase in other income, net during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to a $0.5 million increase in indemnification income received pursuant to our tax matters agreement with Exterran Corporation and a $0.3 million decrease in indemnification expense remitted pursuant to the same agreement.

Income Taxes

(dollars in thousands)

	Three Months Ended June 30,						Increase
	2018			2017			(Decrease)
Benefit from income taxes	$	(1,567	)	$	(1,580	)	(1	)%
Effective tax rate	(61		)%	28		%	(89	)%

Benefit from income taxes during the three months ended June 30, 2018 compared to the three months ended June 30, 2017 remained flat primarily due to an increase in book income tax effected at the lower corporate income tax rate in 2018 as the result of the TCJA, offset almost entirely by a lower unrecognized tax benefit recorded in 2018 compared to 2017 and a benefit recorded in 2018 for the settlement of a tax audit.

Net Income Attributable to the Noncontrolling Interest

(dollars in thousands)

	Three Months Ended June 30,						Increase
	2018			2017			(Decrease)
Net income attributable to the noncontrolling interest	$	(2,212	)	$	(2,651	)	(17	)%

The noncontrolling interest comprises the portion of the Partnership’s earnings that are applicable to the Partnership’s publicly-held common unitholder interest through the completion of the Merger. Immediately prior to the Merger and as of June 30, 2017, public unitholders held a 57% and 55% ownership interest in the Partnership, respectively. See Note 1(“Organization and Summary of Significant Accounting Policies”) to our Financial Statements for further details on the Merger. The decrease in net income attributable to the noncontrolling interest during three months ended June 30, 2018 compared to the three months ended June 30, 2017 was primarily due to Archrock’s acquisition of all of the outstanding common units of the Partnership in conjunction with the Merger on April 26, 2018, partially offset by the increase in net income of the Partnership. The increase in net income of the Partnership was primarily due to the increase in revenue, the decrease in depreciation and amortization and the change from provision for income taxes to benefit from income taxes, partially offset by increases in cost of sales (excluding depreciation and amortization), Merger-related costs, interest expense and SG&A.

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Six Months EndedJune 30, 2018 Compared to Six Months EndedJune 30, 2017

Contract Operations

(dollars in thousands)

	Six Months Ended June 30,						Increase
	2018			2017			(Decrease)
Revenue	$	326,647		$	301,098		8	%
Cost of sales (excluding depreciation and amortization)	132,404			126,340			5	%
Gross margin	$	194,243		$	174,758		11	%
Gross margin percentage (1)	59		%	58		%	1	%

——————

⁽¹⁾  Defined as gross margin divided by revenue.

The increase in revenue during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to a 7% increase in average operating horsepower and an increase in rates resulting from an increase in customer demand driven by improved market conditions. The increase in revenue was partially offset by the deferral of rebillable freight revenue as a result of the adoption of the Revenue Recognition Update.

Gross margin increased during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 due to the increase in revenue mentioned above, partially offset by the increase in cost of sales that was primarily driven by increases in costs associated with the increase in average operating horsepower, the mobilization of compressor units, freight expense, lube expense and other operating costs of providing our contract operations services. The increase in cost of sales was partially offset by the capitalization of freight and mobilization costs incurred to fulfill contracts prior to the transfer of service as a result of the adoption of the Revenue Recognition Update.

Aftermarket Services

(dollars in thousands)

	Six Months Ended June 30,						Increase
	2018			2017			(Decrease)
Revenue	$	112,263		$	86,769		29	%
Cost of sales (excluding depreciation and amortization)	93,130			73,341			27	%
Gross margin	$	19,133		$	13,428		42	%
Gross margin percentage	17		%	15		%	2	%

The increase in revenue during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to increases in service and part sales activities as well as the change to recognize revenue for service activities over time as a result of the adoption of the Revenue Recognition Update.

Gross margin increased during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 due to the increase in revenue mentioned above, partially offset by the increase in cost of sales. The increase in cost of sales was primarily driven by the increase in service and part sales activities as well as the change to recognize costs associated with service activities over time as a result of the adoption of the Revenue Recognition Update. Gross margin percentage increased during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 primarily due to higher labor utilization as a result of the increase in activity mentioned above.

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Costs and Expenses

(dollars in thousands)

	Six Months Ended June 30,						Increase
	2018			2017			(Decrease)
Selling, general and administrative	$	54,157		$	52,715		3	%
Depreciation and amortization	87,786			95,020			(8	)%
Long-lived asset impairment	11,663			13,753			(15	)%
Restatement and other charges	(591		)	2,721			(122	)%
Restructuring and other charges	—			823			(100	)%
Interest expense	45,884			43,925			4	%
Debt extinguishment costs	2,450			291			742	%
Merger-related costs	9,811			—			n/a
Other income, net	(2,789		)	(1,756		)	59	%

Selling, general and administrative. The increase in SG&A during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to a $1.8 million increase in compensation and benefits and a $0.9 million increase in professional expenses, partially offset by $0.9 million decrease in facility rent expense.

Depreciation and amortization. The decrease in depreciation and amortization expense during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to a decrease in depreciation expense resulting from certain assets reaching the end of their depreciable lives as well as the impact of asset impairments during 2017 and early 2018, partially offset by an increase in depreciation expense associated with fixed asset additions.

Long-lived asset impairment. During the six months ended June 30, 2018 and 2017, we reviewed the future deployment of our idle compression assets for units that were not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. In addition, we evaluated for impairment idle units that had been culled from our fleet in prior years and were available for sale. See Note 11(“Long-Lived Asset Impairment”) to our Financial Statements for further details.

The following table presents the results of our impairment review (dollars in thousands):

	Six Months Ended June 30,
	2018		2017
Idle compressor units retired from the active fleet	165		140
Horsepower of idle compressor units retired from the active fleet	50,000		51,000
Impairment recorded on idle compressor units retired from the active fleet	$	11,663	$	13,753

Restatement and other charges. During the six months ended June 30, 2018 we recorded $1.6 million for the expected recovery of shared professional and legal fees incurred related to the restatement of prior period financial statements and disclosures and the related matters described in Note 15(“Commitments and Contingencies”) to our Financial Statements. We were billed $1.0 million and $2.7 million for our share of these fees during the six months ended June 30, 2018 and 2017, respectively.

Restructuring and other charges. As discussed in Note 4(“Discontinued Operations”) to our Financial Statements, we completed the Spin-off in 2015. During the six months ended June 30, 2017 we incurred $0.8 million of costs associated with the Spin-off which were directly attributable to Archrock. No such costs were incurred subsequent to December 31, 2017.

Interest expense. The increase in interest expense during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to an increase in the weighted average effective interest rate partially offset by a $0.6 million write-off of deferred financing costs associated with the termination of the Former Credit Facility in the six months ended June 30, 2017.

Debt extinguishment costs. We recorded a debt extinguishment loss of $2.5 million during the six months ended June 30, 2018 as a result of the termination of the Archrock Credit Facility. See Note 8(“Long-Term Debt”) for further details.

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Merger-related costs. We incurred $9.8 million of Merger-related costs consisting of financial advisory, legal and other professional fees during the six months ended June 30, 2018.

Other income, net. The increase in other income, net during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to a $0.5 million increase in indemnification income received pursuant to our tax matters agreement with Exterran Corporation, a $0.4 million increase in the gain on sale of property, plant and equipment and a $0.4 million decrease in indemnification expense remitted pursuant to our tax matters agreement with Exterran Corporation.

Income Taxes

(dollars in thousands)

	Six Months Ended June 30,						Increase
	2018			2017			(Decrease)
Benefit from income taxes	$	(1,213	)	$	(1,257	)	(4	)%
Effective tax rate	(24		)%	7		%	(31	)%

Benefit from income taxes remained relatively flat during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 primarily due to an increase in book income tax effected at the lower corporate income tax rate in 2018 as the result of the TCJA, offset almost entirely by a lower unrecognized tax benefit recorded in 2018 compared to 2017 and a benefit recorded in 2018 for the settlement of a tax audit.

Net Income (Loss) Attributable to the Noncontrolling Interest

(dollars in thousands)

	Six Months Ended June 30,						Increase
	2018			2017			(Decrease)
Net income attributable to the noncontrolling interest	$	(8,097	)	$	(323	)	2,407	%

The noncontrolling interest comprises the portion of the Partnership’s earnings that are applicable to the Partnership’s publicly-held common unitholder interest through the completion of the Merger. Immediately prior to the Merger and as of June 30, 2017, public unitholders held a 57% and 55% ownership interest in the Partnership, respectively. See Note 1(“Organization and Summary of Significant Accounting Policies”) to our Financial Statements for further details on the Merger. The increase in net income attributable to the noncontrolling interest during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to the increase in net income of the Partnership, partially offset by Archrock’s acquisition of all of the outstanding common units of the Partnership in conjunction with the Merger on April 26, 2018. The increase in net income of the Partnership was primarily due to the increase in revenue and decreases in depreciation and amortization, long-lived asset impairment and provision for income taxes, partially offset by increases in cost of sales (excluding depreciation and amortization), Merger-related costs and interest expense.

Liquidity and Capital Resources

Overview

Our ability to fund operations, finance capital expenditures and pay dividends depends on the levels of our operating cash flows and access to the capital and credit markets. Our primary sources of liquidity are cash flows generated from our operations and our borrowing availability under the Partnership Credit Facility. On April 26, 2018, in connection with the closing of the Merger and Amendment No. 1, the aggregate revolving commitment of the Partnership Credit Facility was increased from $1.1 billion to $1.25 billion and the Archrock Credit Facility was terminated. See “Financial Resources” below and Notes 1(“Organization and Summary of Significant Accounting Policies”) and 8(“Long-Term Debt”) to the Financial Statements for further details of the Merger and the changes to the credit facilities.

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Our cash flow is affected by numerous factors including prices and demand for our services, volatility in commodity prices and their effect on oil and natural gas exploration and production spending, conditions in the financial markets and other factors. New orders for compression services were strong in 2017 and we have continued to book new orders at elevated rates into 2018. We believe that our operating cash flows and borrowings under the Partnership Credit Facility will be sufficient to meet our liquidity needs through at least June 30,2019.

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

Capital Requirements

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

• growth capital expenditures, which are made to expand or replace partially or fully depreciated assets or to expand the operating capacity or revenue generating capabilities of existing or new assets, whether through construction, acquisition or modification; and

• maintenance capital expenditures, which are made to maintain the existing operating capacity of our assets and related cash flows, further extending the useful lives of the assets.

The majority of our growth capital expenditures are related to the acquisition cost of new compressor units that we add to our fleet. In addition, growth capital expenditures can also include the upgrading of major components on an existing compressor unit where the current configuration of the compressor unit is no longer in demand and the compressor is not likely to return to an operating status without the capital expenditures. These latter expenditures substantially modify the operating parameters of the compressor unit such that it can be used in applications for which it previously was not suited. Maintenance capital expenditures are related to major overhauls of significant components of a compressor unit such as the engine, compressor and cooler, which return the components to a like-new condition, but do not modify the applications for which the compressor unit was designed.

We generally invest funds necessary to purchase fleet additions when our idle equipment cannot be reconfigured to economically fulfill a project’s requirements and the new equipment expenditure is expected to generate economic returns over its expected useful life that exceed our targeted return on capital. We currently plan to spend $300 million to $320 million in capital expenditures during 2018, primarily consisting of $230 million to $250 million for growth capital expenditures and $45 million to $50 million for maintenance capital expenditures.

Financial Resources

Revolving Credit Facilities

The following tables present the weighted average annual interest rate and average daily debt balance of our revolving credit facilities (dollars in thousands):

	June 30, 2018		December 31, 2017
Weighted average annual interest rate (1)
Archrock Credit Facility	n/a		3.3	%
Partnership Credit Facility	5.5	%	4.8	%

——————

⁽¹⁾  Excludes the effect of interest rate swaps.

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	Six Months Ended June 30,
	2018		2017
Average daily debt balance
Archrock Credit Facility (1)	$	51,720	$	72,200
Partnership Credit Facility (2)	717,055		594,400

——————

⁽¹⁾  The amount for the six months ended June 30, 2018 is the calculated average daily debt balance through the close of the facility on April 26, 2018.

⁽²⁾  The amount for the six months ended June 30, 2018 pertains to the Partnership Credit Facility. The amount for the six months ended June 30, 2017 pertains to a mix of the Partnership Credit Facility and the Partnership’s Former Credit Facility.

Archrock Credit Facility. On April 26, 2018, in connection with the Merger and Amendment No. 1, we terminated the Archrock Credit Facility and borrowed on the Partnership Credit Facility to repay $63.2 million in borrowings and accrued and unpaid interest and fees outstanding. All commitments under the Archrock Credit Facility were terminated and the $15.4 million of letters of credit outstanding under the Archrock Credit Facility as of the Merger were converted to letters of credit under the Partnership Credit Facility.

Prior to its termination, the Archrock Credit Facility required us to maintain the following consolidated financial ratios, as defined in the Archrock Credit Facility agreement:

EBITDA to Total Interest Expense	2.25 to 1.0
Total Debt to EBITDA (1)	4.25 to 1.0

——————

⁽¹⁾  Subject to a temporary increase to 4.75 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the quarter in which the acquisition closes.

The Archrock Credit Facility contained various additional covenants with which we were required to comply, including, but not limited to, limitations on the incurrence of indebtedness, investments, liens on assets, repurchasing equity and making distributions, transactions with affiliates, mergers, consolidations, dispositions of assets and other provisions customary in similar types of agreements. We were in compliance with all covenants under the Archrock Credit Facility through its closing.

Partnership Credit Facility. On February 23, 2018, the Partnership amended the Partnership Credit Facility to, among other things:

• increase the maximum Total Debt to EBITDA ratios, as defined in the Partnership Credit Facility agreement (see below for the revised ratios), effective as of the execution of Amendment No. 1 on February 23, 2018; and

• effective upon completion of the Merger on April 26, 2018:

– increase the aggregate revolving commitment from $1.1 billion to $1.25 billion;

– increase the amount available for the issuance of letters of credit from $25.0 million to $50.0 million;

– increase the basket sizes under certain covenants including covenants limiting our ability to make investments, incur debt, make restricted payments, incur liens and make asset dispositions;

– name Archrock Services, L.P., one of our subsidiaries, as a borrower under the Partnership Credit Facility and certain of our other subsidiaries as loan guarantors; and

– amend the definition of “Borrowing Base” to include certain assets of ours and our subsidiaries.

The Partnership Credit Facility matures on March 30, 2022, except that if any portion of the Partnership’s 6% senior notes due April 2021 are outstanding as of December 2, 2020, then maturity will instead be on December 2, 2020. Portions of the Partnership Credit Facility up to $50.0 million are available for the issuance of swing line loans. The Partnership Credit Facility borrowing base consists of eligible accounts receivable, inventory and compressor units.

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The Partnership must maintain the following consolidated financial ratios, as defined in the Partnership Credit Facility agreement:

EBITDA to Interest Expense	2.5 to 1.0
Senior Secured Debt to EBITDA	3.5 to 1.0
Total Debt to EBITDA
Through fiscal year 2018	5.95 to 1.0
Through fiscal year 2019	5.75 to 1.0
Through second quarter of 2020	5.50 to 1.0
Thereafter (1)	5.25 to 1.0

——————

⁽¹⁾  Subject to a temporary increase to 5.50 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the quarter in which the acquisition closes.

As a result of the ratio requirements above, $287.6 million of the $464.1 million of undrawn capacity under the Partnership Credit Facility was available for additional borrowings as of June 30, 2018.

The Partnership Credit Facility agreement contains various additional covenants including, but not limited to, mandatory prepayments from the net cash proceeds of certain asset transfers, restrictions on the use of proceeds from borrowings and limitations on the Partnership’s ability to incur additional indebtedness, engage in transactions with affiliates, merge or consolidate, sell assets, make certain investments and acquisitions, make loans, grant liens, repurchase equity and pay distributions. In addition, if as of any date the Partnership has cash and cash equivalents (other than proceeds from a debt or equity issuance received in the 30 days prior to such date reasonably expected to be used to fund an acquisition permitted under the Partnership Credit Facility agreement) in excess of $50.0 million, then such excess amount will be used to pay down outstanding borrowings of a corresponding amount under the Partnership Credit Facility. As of June 30, 2018, the Partnership was in compliance with all covenants under the Partnership Credit Facility.

Other

In connection with the Spin-off, we entered into a separation and distribution agreement with Exterran Corporation pursuant to which we have the right to receive payments from a subsidiary of Exterran Corporation based on a notional amount corresponding to payments received by Exterran Corporation’s subsidiaries from PDVSA Gas in respect of the sale of Exterran Corporation’s subsidiaries’ and joint ventures’ previously nationalized assets. As of June 30, 2018, Exterran Corporation was due to receive the remaining principal amount of $20.9 million from PDVSA Gas.

Cash Flows

Our cash flows from operating, investing and financing activities, as reflected in the condensed consolidated statements of cash flows, are summarized in the table below (in thousands): 

	Six Months Ended June 30,
	2018			2017
Net cash provided by (used in) continuing operations:
Operating activities	$	105,215		$	101,253
Investing activities	(112,727		)	(90,520		)
Financing activities	508			(11,317		)
Discontinued operations	—			45
Net change in cash and cash equivalents	$	(7,004	)	$	(539	)

Operating Activities. The increase in net cash provided by operating activities from continuing operations during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to an increase in revenue in our contract operations and aftermarket services segments primarily driven by improved market conditions and an increase in accounts payable as a result of timing of payments to vendors. These activities were partially offset by an increase in cost of sales, including freight and mobilization costs incurred to fulfill contracts prior to the transfer of service, an increase in Merger-related costs and an increase in accounts receivable as a result of the timing of payments received from our customers.

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Investing Activities. The increase in net cash used in investing activities from continuing operations during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to a $32.8 millionincrease in capital expenditures, partially offset by a $10.3 millionincrease in proceeds from sale of property, plant and equipment.

Financing Activities. The change in cash provided by (used in) financing activities from continuing operations during the six months ended June 30, 2018 compared to the six months ended June 30, 2017 was primarily due to $40.2 million of net borrowings of long-term debt during the six months ended June 30, 2018 compared to $1.0 million in net repayments during the six months ended June 30, 2017, an $11.5 million decrease in payments for debt issuance costs and a $9.1 million decrease in distributions to noncontrolling partners in the Partnership. These changes were partially offset by a $44.7 million decrease in contributions from Exterran Corporation and a $7.0 million increase in dividends to Archrock stockholders.

Dividends

On July 25, 2018, our board of directors declared a quarterly dividend of $0.132 per share of common stock to be paid on August 14, 2018 to stockholders of record at the close of business on August 7, 2018. Any future determinations to pay cash dividends to our stockholders will be at the discretion of our board of directors and will be dependent upon our financial condition and results of operations, credit and loan agreements in effect at that time and other factors deemed relevant by our board of directors.

Off-Balance Sheet Arrangements

For information on our obligations with respect to performance bonds and letters of credit see Note 15(“Commitments and Contingencies”) and Note 8(“Long-Term Debt”), respectively, to our Financial Statements.

Item 3.  Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risk primarily associated with changes in the floating interest rate of the Partnership Credit Facility. We use derivative instruments to manage our exposure to fluctuations in this floating interest rate and thereby minimize the risks and costs associated with financing activities. We do not use derivative instruments for trading or other speculative purposes.

As of June 30, 2018, after taking into consideration interest rate swaps, we had $270.5 million of outstanding indebtedness that was effectively subject to floating interest rates. A 1% increase in the effective interest rate on our outstanding debt subject to floating interest rates at June 30, 2018 would result in an annual increase in our interest expense of $2.7 million.

For further information regarding our use of interest rate swaps to manage our exposure to interest rate fluctuations, see Note 9(“Derivatives”) to our Financial Statements.

Item 4.  Controls and Procedures

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

Management’s Evaluation of Disclosure Controls and Procedures

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

As of the end of the period covered by this Quarterly Report on Form 10-Q, our principal executive officer and principal financial officer evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act, which are designed to provide reasonable assurance that we are able to record, process, summarize and report the information required to be disclosed in our reports under the Exchange Act within the time periods specified in the rules and forms of the SEC. Based on the evaluation, as of June 30, 2018 our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective to provide reasonable assurance that the information required to be disclosed in reports that we file or submit under the Exchange Act is accumulated and communicated to management, and made known to our principal executive officer and principal financial officer, on a timely basis to ensure that it is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

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Changes in Internal Control over Financial Reporting

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

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PART II.  OTHER INFORMATION

Item 1. Legal Proceedings

See Note 15(“Commitments and Contingencies”) to our Financial Statements for a discussion of litigation related to the Heavy Equipment Statutes, which is incorporated by reference into this Item 1.

In the ordinary course of business, we are also involved in various other pending or threatened legal actions. While management is unable to predict the ultimate outcome of these actions, it believes that any ultimate liability arising from any of these other 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.

In addition, the SEC has been conducting an investigation in connection with certain previously disclosed errors and possible irregularities at one of our former international operations. We and Exterran Corporation are cooperating with the SEC in the investigation, which has included, among other things, responding to subpoenas for documents and testimony related to the restatement of prior period consolidated and combined financial statements and related disclosures and compliance with the FCPA, which were also being provided to the DOJ at its request. The SEC staff has provided notice that they have concluded their investigation relating to compliance with the FCPA and that they do not intend to recommend an enforcement action concerning compliance with the FCPA, and the DOJ has also provided notice that it does not intend to proceed with any further investigation or enforcement.

Item 1A. Risk Factors

There have been no material changes or updates to our risk factors that were previously disclosed in our 2017 Form 10-K.

Item 2. Unregistered Sales of Equity Securities

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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Item 6. Exhibits

Exhibit No.	Description
2.1	Agreement and Plan of Merger, dated as of January 1, 2018, by and among Archrock, Inc., Archrock GP LLC, Archrock General Partner, L.P. and Archrock Partners, L.P., incorporated by reference to Exhibit 2.1 of Archrock’s Current Report on Form 8-K filed on January 2, 2018
2.2	Amendment No. 1 to Agreement and Plan of Merger, dated as of January 11, 2018, by and among Archrock, Inc., Archrock GP LLC, Archrock General Partner, L.P., Archrock Partners, L.P. and Amethyst Merger Sub LLC, incorporated by reference to Exhibit 2.2 of Archrock’s Current Report on Form 8-K filed on January 16, 2018
3.1	Restated Certificate of Incorporation of Exterran Holdings, Inc. (now Archrock, Inc.), incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K filed on August 20, 2007
3.2	Certificate of Amendment of Certificate of Incorporation of Exterran Holdings, Inc. (now Archrock, Inc.), incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on November 5, 2015
3.3	Composite Certificate of Incorporation of Archrock, Inc. (as amended as of November 3,2015), incorporated by reference to Exhibit 3.3 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2015
3.4	Third Amended and Restated Bylaws of Exterran Holdings, Inc. (now Archrock, Inc.), incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K filed on March 20, 2013
10.1	Omnibus Joinder Agreement, dated as of April 26, 2018, by and among Archrock, Inc., Archrock Services, L.P., AROC Corp., AROC Services GP LLC, AROC Services LP LLC, Archrock Services Leasing LLC, Archrock GP LP LLC, and Archrock MLP LP LLC and acknowledged and accepted by JPMorgan Chase Bank, N.A., as the Administrative Agent, incorporated by reference to Exhibit 10.3 of the Registrant’s Current Report on Form 8-K filed on April 26, 2018
10.2	Amendment and Supplement to Pledge and Security Agreement dated as of April 26, 2018, by and among Archrock Partners Operating LLC, Archrock Partners, L.P., Archrock Partners Finance Corp., Archrock Partners Leasing LLC, Archrock, Inc., Archrock Services, L.P., AROC Corp., AROC Services GP LLC, AROC Services LP LLC, Archrock Services Leasing LLC, Archrock GP LP LLC, Archrock MLP LP LLC and JPMorgan Chase Bank, N.A., as the Administrative Agent, incorporated by reference to Exhibit 10.4 of the Registrant’s Current Report on Form 8-K filed on April 26, 2018
31.1*	Certification of the Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of the Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1**	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2**	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.1*	Interactive data files pursuant to Rule 405 of Regulation S-T

* Filed herewith.

** Furnished, not filed.

51

SIGNATURES

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

ARCHROCK, INC.
By:	/s/ RAYMOND K. GUBA
	Raymond K. Guba
	Interim Chief Financial Officer
	(Principal Financial Officer)
By:	/s/ DONNA A. HENDERSON
	Donna A. Henderson
	Vice President and Chief Accounting Officer
	(Principal Accounting Officer)
	August 2, 2018

52

EX-31.1

Exhibit 31.1

Certification

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

I, D. Bradley Childers, certify that:

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

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

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

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

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

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

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

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

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

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

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

Date: August 2, 2018

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

EX-31.2

Exhibit 31.2

Certification

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

I, Raymond K. Guba, certify that:

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

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

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

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

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

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

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

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

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

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

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

Date: August 2, 2018

By:	/s/ RAYMOND K. GUBA
	Name:	Raymond K. Guba
	Title:	Interim Chief Financial Officer
		(Principal Financial Officer)

EX-32.1

Exhibit 32.1

Certification of CEO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Archrock, Inc. (the “Company”) for the quarter ended June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), D. Bradley Childers, as Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

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

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

/s/ D. BRADLEY CHILDERS
Name:	D. Bradley Childers
Title:	President and Chief Executive Officer
Date: August 2, 2018

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

EX-32.2

Exhibit 32.2

Certification of CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Archrock, Inc. (the “Company”) for the quarter ended June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Raymond K. Guba, as Interim Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

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

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

/s/ RAYMOND K. GUBA
Name:	Raymond K. Guba
Title:	Interim Chief Financial Officer
Date: August 2, 2018

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

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 26, 2018
Document and Entity Information
Entity Registrant Name	ARCHROCK, INC.
Entity Central Index Key	0001389050
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		129,414,646
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 3,532	$ 10,536
Accounts receivable, trade, net of allowance of $1,847 and $1,794, respectively	130,596	113,416
Inventory	82,470	90,691
Other current assets	9,808	6,220
Current assets associated with discontinued operations	300	300
Total current assets	226,706	221,163
Property, plant and equipment, net	2,125,287	2,076,927
Intangible assets, net	60,390	68,872
Contract costs	31,240	0
Other long-term assets	34,195	27,782
Long-term assets associated with discontinued operations	6,421	13,263
Total assets	2,484,239	2,408,007
Current liabilities:
Accounts payable, trade	91,818	54,585
Accrued liabilities	67,152	71,116
Deferred revenue	8,859	4,858
Current liabilities associated with discontinued operations	297	297
Total current liabilities	168,126	130,856
Long-term debt	1,458,863	1,417,053
Deferred income taxes	2,568	97,943
Other long-term liabilities	17,536	20,116
Long-term liabilities associated with discontinued operations	6,421	6,421
Total liabilities	1,653,514	1,672,389
Commitments and contingencies (Note 15)
Equity:
Preferred stock, $0.01 par value per share: 50,000,000 shares authorized, zero issued	0	0
Common stock, $0.01 par value per share: 250,000,000 shares authorized, 135,478,039 and 76,880,862 shares issued, respectively	1,355	769
Additional paid-in capital	3,150,118	3,093,058
Accumulated other comprehensive income	9,374	1,197
Accumulated deficit	(2,252,349)	(2,241,243)
Treasury stock, 6,072,751 and 5,930,380 common shares, at cost, respectively	(77,773)	(76,732)
Total Archrock stockholders’ equity	830,725	777,049
Noncontrolling interest	0	(41,431)
Total equity	830,725	735,618
Total liabilities and equity	$ 2,484,239	$ 2,408,007

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 1,847	$ 1,794
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)	135,478,039	76,880,862
Treasury stock, common shares (in shares)	6,072,751	5,930,380

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue:
Revenues	$ 226,870	$ 197,982	$ 438,910	$ 387,867
Costs and expenses:
Selling, general and administrative	26,649	25,162	54,157	52,715
Depreciation and amortization	43,331	47,248	87,786	95,020
Long-lived asset impairment	6,953	5,508	11,663	13,753
Restatement and other charges	(1,076)	1,920	(591)	2,721
Restructuring and other charges	0	366	0	823
Interest expense	23,337	22,504	45,884	43,925
Debt extinguishment costs	2,450	0	2,450	291
Merger-related costs	5,686	0	9,811	0
Other income, net	(1,644)	(962)	(2,789)	(1,756)
Total costs and expenses	224,288	203,598	433,905	407,173
Income (loss) before income taxes	2,582	(5,616)	5,005	(19,306)
Benefit from income taxes	(1,567)	(1,580)	(1,213)	(1,257)
Net income (loss)	4,149	(4,036)	6,218	(18,049)
Less: Net income attributable to the noncontrolling interest	(2,212)	(2,651)	(8,097)	(323)
Net income (loss) attributable to Archrock stockholders	$ 1,937	$ (6,687)	$ (1,879)	$ (18,372)
Basic and diluted net income (loss) per common share:
Net income (loss) attributable to Archrock common stockholders (in dollars per share)	$ 0.02	$ (0.10)	$ (0.02)	$ (0.27)
Weighted average common shares outstanding:
Basic (in shares)	111,296	69,588	90,589	69,496
Diluted (in shares)	111,402	69,588	90,589	69,496
Dividends declared and paid per common share (in dollars per share)	$ 0.12	$ 0.1200	$ 0.24	$ 0.24
Contract Operations | Contract operations
Revenue:
Revenues	$ 165,450	$ 151,114	$ 326,647	$ 301,098
Costs and expenses:
Costs of sales (excluding depreciation and amortization expense)	67,809	62,243	132,404	126,340
Aftermarket Services | Aftermarket services
Revenue:
Revenues	61,420	46,868	112,263	86,769
Costs and expenses:
Costs of sales (excluding depreciation and amortization expense)	$ 50,793	$ 39,609	$ 93,130	$ 73,341

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,149	$ (4,036)	$ 6,218	$ (18,049)
Other comprehensive income, net of tax:
Derivative gain, net of reclassifications to earnings	1,720	398	6,282	1,814
Amortization of terminated interest rate swaps	85	21	230	45
Merger-related adjustments	5,670	0	5,670	0
Total other comprehensive income	7,475	419	12,182	1,859
Comprehensive income (loss)	11,624	(3,617)	18,400	(16,190)
Less: Comprehensive income attributable to the noncontrolling interest	(3,506)	(2,877)	(12,360)	(1,440)
Comprehensive income (loss) attributable to Archrock stockholders	$ 8,118	$ (6,494)	$ 6,040	$ (17,630)

XML

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Accumulated Deficit	Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity
Impact of adoption of Accounting Standard Update | ASU 2016-09	$ 1,290		$ 209			$ 1,081
Beginning balance at Dec. 31, 2016	684,928	$ 762	3,021,040	$ (1,678)	$ (73,944)	(2,227,214)	$ (34,038)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased	(2,180)				(2,180)
Cash dividends	(16,992)					(16,992)
Stock-based compensation, net of forfeitures	4,258	5	3,984				269
Stock options exercised	939	1	938
Contribution from Exterran Corporation	44,709		44,709
Cash distribution to noncontrolling unitholders of the Partnership	(20,908)						(20,908)
Comprehensive loss
Net income (loss)	(18,049)					(18,372)	323
Derivative gain, net of reclassifications to earnings	1,814			697			1,117
Amortization of terminated interest rate swaps	45			45
Merger-related adjustments	0
Ending balance at Jun. 30, 2017	679,854	768	3,070,880	(936)	(76,124)	(2,261,497)	(53,237)
Increase (Decrease) in Stockholders' Equity
Impact of adoption of Accounting Standard Update | ASU 2014-09	14,666					14,666
Impact of adoption of Accounting Standard Update | ASU 2017-12	383					383
Beginning balance at Dec. 31, 2017	735,618	769	3,093,058	1,197	(76,732)	(2,241,243)	(41,431)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased	(1,041)				(1,041)
Cash dividends	(24,018)					(24,018)
Shares issued in employee stock purchase plan	416	1	415
Stock-based compensation, net of forfeitures	3,513	9	3,568				(64)
Stock options exercised	262		262
Cash distribution to noncontrolling unitholders of the Partnership	(11,766)						(11,766)
Merger-related adjustments	94,292	576	52,815				40,901
Comprehensive loss
Net income (loss)	6,218					(1,879)	8,097
Derivative gain, net of reclassifications to earnings	6,282			2,019			4,263
Amortization of terminated interest rate swaps	230			230
Merger-related adjustments	5,670			5,670
Ending balance at Jun. 30, 2018	$ 830,725	$ 1,355	$ 3,150,118	9,374	$ (77,773)	(2,252,349)	$ 0
Increase (Decrease) in Stockholders' Equity
Impact of adoption of ASU 2018-02				$ 258		$ (258)

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 6,218	$ (18,049)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	87,786	95,020
Long-lived asset impairment	11,663	13,753
Inventory write-downs	1,018	984
Amortization of deferred financing costs	3,094	3,904
Amortization of debt discount	694	652
Amortization of terminated interest rate swaps	291	68
Debt extinguishment costs	2,450	291
Interest rate swaps	327	980
Stock-based compensation expense	3,763	4,075
Non-cash restructuring charges	0	823
Provision for doubtful accounts	908	1,211
Gain on sale of property, plant and equipment	(2,188)	(1,789)
Deferred income tax benefit	(1,327)	(1,499)
Amortization of contract costs	6,281	0
Changes in assets and liabilities:
Accounts receivable, trade	(10,458)	1,290
Inventory	(50)	(1,784)
Other current assets	484	(1,159)
Contract costs	(15,998)	0
Accounts payable and other liabilities	9,858	2,139
Deferred revenue	507	186
Other	(106)	157
Net cash provided by continuing operations	105,215	101,253
Net cash provided by discontinued operations	0	45
Net cash provided by operating activities	105,215	101,298
Cash flows from investing activities:
Capital expenditures	(132,172)	(99,409)
Proceeds from sale of property, plant and equipment	19,193	8,889
Proceeds from insurance	252	0
Net cash used in investing activities	(112,727)	(90,520)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	383,830	969,000
Repayments of long-term debt	(343,636)	(970,000)
Payments for debt issuance costs	(3,332)	(14,855)
Payments for settlement of interest rate swaps that include financing elements	(207)	(1,041)
Dividends to Archrock stockholders	(24,018)	(16,992)
Distributions to noncontrolling partners in the Partnership	(11,766)	(20,908)
Proceeds from stock options exercised	262	939
Proceeds from stock issued under our employee stock purchase plan	416	0
Purchases of treasury stock	(1,041)	(2,180)
Contribution from Exterran Corporation	0	44,720
Net cash provided by (used in) financing activities	508	(11,317)
Net decrease in cash and cash equivalents	(7,004)	(539)
Cash and cash equivalents at beginning of period	10,536	3,134
Cash and cash equivalents at end of period	3,532	2,595
Supplemental disclosure of Non-Cash Transactions:
Issuance of Archrock common stock pursuant to merger, net of tax	$ 53,391	$ 0

XML

Organization and Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Organization and Summary of Significant Accounting Policies

1. Organization and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with U.S. GAAP for interim financial information 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 includes all adjustments, consisting only of normal recurring adjustments, which are necessary to present fairly 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 2017 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. Certain prior year amounts have been reclassified to conform to the current year presentation.

Organization

We are a pure play U.S. natural gas contract operations services business and the leading provider of natural gas compression services to customers in the oil and natural gas 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 primary business segments: contract operations and aftermarket services. In our contract operations business, we use our owned fleet of natural gas compression equipment to provide operations services to our customers. In our aftermarket services business line, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

Merger Transaction

On January 1, 2018, we entered into the Merger Agreement pursuant to which we agreed to merge the Partnership with and into our indirect wholly-owned subsidiary. On April 26, 2018, the Merger was completed and we issued 57.6 million shares of our common stock to acquire the 41.2 million common units of the Partnership not owned by us prior to the Merger at a fixed exchange ratio of 1.40 shares of our common stock for each Partnership common unit for total implied consideration of $625.3 million. Additionally, the incentive distribution rights in the Partnership, all of which we owned indirectly prior to the Merger, were canceled and ceased to exist. As a result of the Merger, the Partnership’s common units are no longer publicly traded. The Partnership’s 6% senior notes due April 2021 and October 2022 were not impacted by the Merger and remain outstanding.

As we controlled the Partnership prior to the Merger and continue to control the Partnership after the Merger, we accounted for the change in our ownership interest in the Partnership as an equity transaction which was reflected as a reduction of the noncontrolling interest with corresponding increases to common stock, additional paid-in capital and accumulated other comprehensive income. No gain or loss was recognized in our condensed consolidated statements of operations as a result of the Merger.

The following table presents the effects of changes in our ownership interest in the Partnership on the equity attributable to Archrock stockholders:

	Six Months Ended June 30,
	2018			2017
Net loss attributable to Archrock stockholders	$	(1,879	)	$	(18,372	)
Decrease in Archrock stockholders’ additional paid-in capital for purchase of Partnership common units	52,815			—
Change from net loss attributable to Archrock stockholders and transfers from noncontrolling interest	$	50,936		$	(18,372	)

Prior to the Merger, public unitholders held an approximate 57% ownership interest in the Partnership and we owned the remaining equity interest. The equity interests in the Partnership that were owned by the public prior to April 26, 2018 are reflected within noncontrolling interest in our condensed consolidated balance sheet as of December 31, 2017. The earnings of the Partnership that were attributed to its common units held by the public prior to April 26, 2018 are reflected in net income (loss) attributable to the noncontrolling interest in our condensed consolidated statement of operations.

The tax effects of the Merger were reported as adjustments to other long-term assets, long-term assets associated with discontinued operations, deferred income taxes, additional paid-in capital and other comprehensive income. Due to the change in ownership and tax step up from the consideration given in the Merger, we recorded a $156.5 million deferred tax asset which resulted in an overall $57.2 million net deferred tax asset. We evaluated the realizability of our resulting net deferred tax asset position by assessing the available positive and negative evidence and concluded, based on the weight of the evidence, that a $55.3 million valuation allowance was required. The $101.2 million net tax impact of the change in deferred tax asset and the valuation allowance was recorded as an offsetting increase to additional paid-in capital.

We incurred $5.7 million and $9.8 million of transaction costs directly attributable to the Merger during the three and six months ended June 30, 2018, respectively, including financial advisory, legal service and other professional fees, which were recorded to merger-related costs on our condensed consolidated statements of operations.

Significant Accounting Policies

Income (Loss) Attributable to Archrock Common Stockholders Per Common Share

Basic income (loss) attributable to Archrock common stockholders 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 income (loss) attributable to Archrock common stockholders per common share is determined by dividing income (loss) attributable to Archrock common stockholders 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, no effect is given to participating securities because they do not have a contractual obligation to participate in our losses.

Diluted income (loss) attributable to Archrock common stockholders per common share is computed using the weighted average number of shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding options and stock to be issued pursuant to our employee stock purchase plan unless their effect would be anti-dilutive.

The following table summarizes net income (loss) attributable to Archrock common stockholders used in the calculation of basic and diluted loss per common share (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net income (loss) attributable to Archrock stockholders	$	1,937		$	(6,687	)	$	(1,879	)	$	(18,372	)
Less: Net income attributable to participating securities	(157		)	(180		)	(313		)	(334		)
Net income (loss) attributable to Archrock common stockholders	$	1,780		$	(6,867	)	$	(2,192	)	$	(18,706	)

The following table shows the potential shares of common stock that were included in computing diluted income (loss) attributable to Archrock common stockholders per common share (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Weighted average common shares outstanding including participating securities	112,995		70,908		92,130		70,833
Less: Weighted average participating securities outstanding	(1,699	)	(1,320	)	(1,541	)	(1,337	)
Weighted average common shares outstanding — used in basic income (loss) per common share	111,296		69,588		90,589		69,496
Net dilutive potential common shares issuable:
On exercise of options	99		*		*		*
On the settlement of employee stock purchase plan shares	7		—		*		—
Weighted average common shares outstanding — used in diluted income (loss) per common share	111,402		69,588		90,589		69,496

——————

* Excluded from diluted income (loss) per common share as their inclusion would have been anti-dilutive.

The following table shows the potential shares of common stock issuable that were excluded from computing diluted income (loss) attributable to Archrock common stockholders per common share as their inclusion would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2018	2017	2018	2017
Net dilutive potential common shares issuable:
On exercise of options where exercise price is greater than average market value for the period	187	282	205	297
On exercise of options	—	108	89	125
On the settlement of employee stock purchase plan shares	—	—	5	—
Net dilutive potential common shares issuable	187	390	299	422

Comprehensive Income (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 income (loss) consists of changes in the fair value of derivative instruments, net of tax, that are designated as cash flow hedges, amortization of terminated interest rate swaps and adjustments related to changes in our ownership of the Partnership.

The following table presents the changes in accumulated other comprehensive income (loss) by component, net of tax, and excluding noncontrolling interest, during the six months ended June 30, 2017 and 2018 (in thousands):

	Derivatives Cash Flow Hedges
Accumulated other comprehensive loss, January 1, 2017	$	(1,678	)
Gain recognized in other comprehensive income, net of tax(1)	173
Loss reclassified from accumulated other comprehensive loss, net of tax(2)	569
Other comprehensive income attributable to Archrock stockholders	742
Accumulated other comprehensive loss, June 30, 2017	$	(936	)
Accumulated other comprehensive income, January 1, 2018	$	1,197
Gain recognized in other comprehensive income, net of tax(3)	2,051
Loss reclassified from accumulated other comprehensive loss, net of tax(4)	456
Merger-related adjustments (5)	5,670
Other comprehensive income attributable to Archrock stockholders	8,177
Accumulated other comprehensive income, June 30, 2018	$	9,374

——————

⁽¹⁾  During the three months ended June 30, 2017, we recognized a loss of $0.1 million and a tax benefit of $0.1 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2017, we recognized a gain of $0.2 million and immaterial tax expense in other comprehensive income (loss) related to change in the fair value of derivative financial instruments.

⁽²⁾  During the three months ended June 30, 2017, we reclassified a loss of $0.4 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2017, we reclassified a loss of $0.9 million to interest expense and a tax benefit of $0.3 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss).

⁽³⁾  During the three months ended June 30, 2018, we recognized a gain of $0.9 million and a tax provision of $0.5 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2018, we recognized a gain of $2.9 million and a tax provision of $0.9 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments.

⁽⁴⁾  During the three months ended June 30, 2018, we reclassified an immaterial loss to interest expense and an immaterial tax benefit to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2018, we reclassified a loss of $0.3 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). Additionally, during the six months ended June 30, 2018, we reclassified stranded tax effects resulting from the TCJA of $0.3 million to accumulated deficit in our condensed consolidated balance sheets. See Note 2(“Recent Accounting Developments”) for further detail.

⁽⁵⁾  Pursuant to the Merger, we reclassified a gain of $5.7 million from noncontrolling interest to accumulated other comprehensive income (loss) related to fair value of derivative instruments that was previously attributed to public ownership of the Partnership.

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Recent Accounting Developments

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recent Accounting Developments

2. Recent Accounting Developments

Accounting Standards Updates Implemented

ASU 2018-05 was issued in March 2018 to clarify the income taxes disclosure requirements as they pertain to SAB 118, including the requirement to disclose a reasonable estimate, if determinable, of the tax effects of the TCJA in the reporting period in which the TCJA was enacted, as well as additional disclosures required in the following interim reporting periods if the measurement period approach is used. In accordance with ASU 2018-05, we disclosed a reasonable estimate of the income tax effects of the TCJA on our consolidated financial statements in our 2017 Form 10-K and there have been no changes to this estimate. We anticipate finalizing the amounts in connection with the completion of our 2017 income tax returns in the fourth quarter of 2018.

On January 1, 2018, we adopted ASU 2018-02 which allows for a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the TCJA. As a result of the TCJA’s corporate rate reduction, we had $0.3 million of stranded tax effects in accumulated other comprehensive income related to our derivative instruments and terminated interest rate swaps, which we elected to reclassify to accumulated deficit.

On January 1, 2018, we adopted ASU 2017-12 using the modified retrospective approach to existing cash flow hedge relationships as of January 1, 2018. ASU 2017-12 expands and refines hedge accounting for both financial and nonfinancial risk components, aligns the recognition and presentation of the effects of the hedging instrument and hedged item in the financial statements and eliminates the requirement to separately measure and report hedge ineffectiveness. As a result of the adoption of ASU 2017-12, we recognized a net gain of $0.4 million as a cumulative-effect adjustment to opening retained earnings and a corresponding adjustment to other comprehensive income (loss) to reverse the cumulative ineffectiveness previously recognized in interest expense.

On January 1, 2018, we adopted ASU 2016-15 on a retrospective basis. ASU 2016-15 addresses diversity in practice and simplifies several elements of cash flow classification including how certain cash receipts and cash payments are classified in the statement of cash flows. ASU 2016-15 did not have an impact on our condensed consolidated statement of cash flow for the six months ended June 30, 2017.

Revenue Recognition Update

On January 1, 2018, we adopted the Revenue Recognition Update using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We recognized the cumulative effect of initially applying the Revenue Recognition Update as an adjustment to the opening balance of retained earnings. For contracts that were modified before the effective date, we identified performance obligations on the basis of the current version of the contract, which included any contract modifications since inception. The application of the practical expedient for contract modifications did not have a material effect on the adjustment to retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

Under previous guidance, contract operations revenue was recognized when earned, which generally occurs monthly when the service is provided under our customer contracts. Under the Revenue Recognition Update the timing of revenue recognition is impacted by contractual provisions for service availability guarantees of our compressor assets and re-billable costs associated with moving our compressor assets to a customer site. These changes are further discussed below and did not result in a material difference from previous practice for contract operations.

The Revenue Recognition Update resulted in a significant change related to our aftermarket services operations, maintenance, overhaul and reconfiguration services. Under previous guidance, revenue was recognized on a completed contract basis as products were delivered and title was transferred or services were performed for the customer. Under the Revenue Recognition Update, these services are recognized as revenue over time, using output or input methods to measure the progress toward complete satisfaction of the performance obligation based on the nature of the goods or services being provided. The adoption did not result in a material difference in the amount or timing of revenues for aftermarket services parts and components sales.

The Revenue Recognition Update provides guidance on contract costs that should be recognized as assets and amortized over the period that the related goods or services transfer to the customer. Certain costs that were previously expensed as incurred, such as sales commissions and freight charges to transport compressor assets, are deferred and amortized.

The following table summarizes the cumulative impact of the adoption of the Revenue Recognition Update on the opening balance sheet (in thousands):

	December 31, 2017			Adjustments Due to the Revenue Recognition Update			January 1, 2018
Assets
Accounts receivable, trade	$	113,416		$	7,883		$	121,299
Inventory	90,691			(6,917		)	83,774
Contract costs	—			21,524			21,524
Liabilities
Accrued liabilities	$	71,116		$	209		$	71,325
Deferred revenue	4,858			3,188			8,046
Deferred income taxes	97,943			4,427			102,370
Equity
Accumulated deficit	$	(2,241,243	)	$	14,666		$	(2,226,577	)

The following tables summarize the impact of the application of the Revenue Recognition Update on our condensed consolidated balance sheet and condensed consolidated statement of operations (in thousands):

	June 30, 2018
Balance Sheet	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Assets
Accounts receivable, trade	$	130,596		$	115,923		$	14,673
Inventory	82,470			97,463			(14,993		)
Contract costs	31,240			—			31,240
Liabilities
Accounts payable, trade	$	91,818		$	91,776		$	42
Accrued liabilities	67,152			66,930			222
Deferred revenue	8,859			7,037			1,822
Deferred income taxes	2,568			2,329			239
Other long-term liabilities	17,536			17,514			22
Equity
Additional paid-in capital (1)	$	3,150,118		$	3,140,754		$	9,364
Accumulated deficit	(2,252,349		)	(2,271,558		)	19,209

——————

⁽¹⁾  Represents the impact of the Revenue Recognition Update on net income attributable to noncontrolling interest which was reclassed to additional paid-in capital pursuant to the Merger.

	Three Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	165,450		$	166,341		$	(891	)
Aftermarket services	61,420			56,660			4,760
Total revenue	226,870			223,001			3,869
Cost of sales (excluding depreciation and amortization):
Contract operations	67,809			71,956			(4,147		)
Aftermarket services	50,793			47,103			3,690
Selling, general and administrative	26,649			27,025			(376		)
Benefit from income taxes	(1,567		)	(4,097		)	2,530
Less: Net income attributable to the noncontrolling interest	(2,212		)	(1,735		)	(477		)
Net income attributable to Archrock stockholders	1,937			242			1,695

	Six Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	326,647		$	329,325		$	(2,678	)
Aftermarket services	112,263			101,442			10,821
Total Revenue	438,910			430,767			8,143
Cost of sales (excluding depreciation and amortization):
Contract operations	132,404			141,150			(8,746		)
Aftermarket services	93,130			85,011			8,119
Selling, general and administrative	54,157			55,127			(970		)
Benefit from income taxes	(1,213		)	(4,454		)	3,241
Less: Net income attributable to the noncontrolling interest	(8,097		)	(6,141		)	(1,956		)
Net loss attributable to Archrock stockholders	(1,879		)	(6,422		)	4,543

Accounting Standards Updates Not Yet Implemented

In June 2016, the FASB issued ASU 2016-13 that changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019 and early adoption is permitted. Entities will apply ASU 2016-13 provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02 that establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. Under the new guidance, lessor accounting is largely unchanged. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach that involves recasting the comparative periods in the year of initial application is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain optional transition practical expedients available. We intend to adopt ASU 2016-02 on January 1, 2019 and are currently assessing the practical expedients.

Though our assessment of the impact of the adoption of ASU 2016-02 is ongoing, we anticipate significant changes to our consolidated balance sheets and disclosures based on the requirements prescribed by the new standard. We do not believe the standard will materially affect our consolidated statements of operations. We are in the process of assessing changes to our internal control structure and will continue to evaluate our business processes, systems and accounting policies that are necessary to implement this standard.

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Revenue from Contract with Customers

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

3. Revenue from Contracts with Customers

Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we are entitled to receive in exchange for those goods or services. Sales and usage-based taxes that are collected from the customer are excluded from revenue.

The following table presents our revenue from contracts with customers disaggregated by revenue source (in thousands):

	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
Contract Operations (1):
0 - 1000 horsepower per unit	$	59,600	$	119,192
1,001 - 1,500 horsepower per unit	68,948		135,178
Over 1,500 horsepower per unit	35,904		70,314
Other (2)	998		1,963
Total contract operations (3)	165,450		326,647
Aftermarket Services (1):
Services	36,706		68,913
OTC parts and components sales	24,714		43,350
Total aftermarket services (4)	61,420		112,263
Total revenue (5)	$	226,870	$	438,910

——————

⁽¹⁾  We operate in two segments: contract operations and aftermarket services. See Note 16(“Segments”) for further details regarding our segments.

⁽²⁾  Primarily relates to fees associated with Archrock-owned non-compressor equipment.

⁽³⁾  Includes $1.4 million and $2.7 million for the three and six months ended June 30, 2018, respectively, related to billable maintenance on Archrock-owned units that was recognized at a point in time. All other revenue within contract operations is recognized over time.

⁽⁴⁾  All service revenue within aftermarket services is recognized over time. All OTC parts and components sales revenue is recognized at a point in time.

Contract Operations

We provide comprehensive contract operations services including the personnel, equipment, tools, materials and supplies to meet our customers’ natural gas compression needs. Based on the operating specifications at the customer location and each customer's unique needs, these services include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining equipment to provide natural gas compression services to our customers.

Natural gas compression services are generally satisfied over time, as the customer simultaneously receives and consumes the benefits provided by these services. Our performance obligation is a series in which the unit of service is one month, as the customer receives substantially the same benefit each month from the services regardless of the type of service activity performed, which may vary. If the transaction price is based on a fixed fee, revenue is recognized monthly on a straight-line basis over the period that we are providing services to the customer. Amounts invoiced to customers for costs associated with moving our compressor assets to a customer site are also included in the transaction price and are amortized over the initial contract term.

Variable consideration exists if customers are billed at a lesser standby rate when a unit is not running. We have elected to apply the invoicing practical expedient to recognize revenue for such variable consideration, as the invoice corresponds directly to the value transferred to the customer based on our performance completed to date. The rate for standby service is lower to reflect the decrease in costs and effort required to provide standby service when a unit is not running.

We also perform billable maintenance service on our natural gas compression equipment at the customer’s request on an as-needed basis. The performance obligation is satisfied, and revenue is recognized at the agreed-upon transaction price, at the point in time when service is complete and the customer has accepted the work performed and can obtain the remaining benefits of the service that the unit will provide.

As of June 30, 2018, we had $224.3 million of remaining performance obligations related to our contract operations segment. We have elected to apply the practical expedient to not consider the effects of the time value of money, as the expected time between the transfer of services and payment for such services is less than one year. The remaining performance obligations will be recognized through 2021 as follows (in thousands):

	2018		2019		2020		2021		Total
Contract operations remaining performance obligations	$	125,577	$	71,713	$	23,027	$	3,993	$	224,310

Aftermarket Services

We provide a full range of services to support the compression needs of customers. We sell OTC parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

We sell OTC parts and components needed for the maintenance or repair of customer-owned compression equipment. The performance obligation is generally satisfied at the point in time when delivery takes place and the customer obtains control of the part or component. The transaction price is the fixed sales price for the part stated in the contract. Revenue is recognized upon delivery, as we have a present right to payment and the customer has legal title.

Our aftermarket service activities include operations, maintenance, overhaul and reconfiguration services on customer-owned compression equipment on an as-needed basis or as part of a monthly maintenance schedule. The service activities performance obligation is satisfied over time, as the work performed enhances the customer-controlled asset and another entity would not have to substantially re-perform the work we completed if they were to fulfill the remaining performance obligation. The transaction price may be a fixed monthly service fee, a fixed quoted fee or entirely variable, calculated on a time and materials basis.

For service provided based on a fixed monthly fee, the performance obligation is a series in which the unit of service is one month. The customer receives substantially the same benefit each month from the service, regardless of the type of service activity performed, which may vary. As the progress towards satisfaction of the performance obligation is measured based on the passage of time, revenue is recognized monthly based on the fixed fee provided for in the contract.

For service provided based on a quoted fixed fee, progress towards satisfaction of the performance obligation is measured using an input method based on the actual amount of labor and material costs incurred. The amount of the transaction price recognized as revenue each reporting period is determined by multiplying the transaction price by the ratio of actual costs incurred to date to total estimated costs expected for the service. Significant judgment is involved in the estimation of the progress to completion. Any adjustments to the measure of the progress to completion will be accounted for on a prospective basis. Changes to the scope of service is recognized as an adjustment to the transaction price in the period in which the change occurs.

Service provided based on time and materials are generally short-term in nature and labor rates and parts pricing is agreed upon prior to commencing the service. We have elected to use the right-to-invoice practical expedient using an estimated gross margin percentage applied to actual costs incurred. The estimated gross margin percentage is fixed based on historical time and materials-based service. We evaluate the estimated gross margin percentage at the end of each reporting period and adjust the transaction price as appropriate.

We believe these fee- and cost-based inputs fairly depict our efforts to provide aftermarket services and the amount of revenue recognized is representative of the transfer of service and value that the customer will have received as of the reporting date. As of June 30, 2018 we have elected to apply the practical expedient to 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 Balances

Contract operations services are generally billed monthly at the beginning of the month in which service is being provided. For aftermarket services, billings will typically occur when parts are delivered or when service is complete; however, milestone billings may be used in longer-term projects. We recognize a contract asset when we have the right to consideration in exchange for goods or services transferred to a customer when the right is conditioned on something other than the passage of time. We recognize a contract liability when we have an obligation to transfer goods or services to a customer for which we have already received consideration. Freight billings to transport compressor assets and milestone billings on aftermarket services often result in a contract liability.

As of June 30, and January 1, 2018, our receivables from contracts with customers, net of allowance for doubtful accounts were $124.1 million and $115.6 million, respectively. As of June 30, and January 1, 2018, our contract liabilities were $9.5 million and $9.0 million, respectively, which are included in deferred revenue and other long-term liabilities in our condensed consolidated balance sheets. The increase in the contract liability balance was due to the deferral of $8.8 million primarily related to freight billings, partially offset by $8.3 million recognized as revenue during the period primarily related to freight billings and aftermarket services.

7. Contract Costs

We capitalize incremental costs to obtain a contract with a customer if we expect to recover those costs.Capitalized costs include commissions paid to our sales force to obtain contract operations contracts. We have applied the practical expedient to expense commissions paid for sales of service contracts and OTC parts and components within our aftermarket services segment as the amortization period is less than one year. As of June 30, and January 1, 2018, we recorded contract costs of $3.2 million and $2.3 million, respectively, associated with sales commissions.

We capitalize costs incurred to fulfill a contract if those costs relate directly to a contract, enhance resources that we will use in satisfying performance obligations and if we expect to recover those costs. Capitalized costs incurred to fulfill our customer contracts include freight charges to transport compressor assets before transferring services to the customer and mobilization activities associated with our contract operations services. As of June 30, and January 1, 2018, we recorded contract costs of $28.0 million and $19.2 million, respectively, associated with freight and mobilization.

Contract operations costs are amortized based on the transfer of service to which the assets relate, which is estimated to be 36 months based on average contract term, including anticipated renewals. We assess periodically whether the 36-month estimate fairly represents the average contract term and adjust as appropriate. Aftermarket services fulfillment costs are recognized based on the percentage-of-completion method applicable to the customer contract. Contract costs associated with commissions are amortized to SG&A. Contract costs associated with freight and mobilization are amortized to cost of sales (excluding depreciation and amortization). During the three and six months ended June 30, 2018, we amortized $0.4 million and $0.7 million, respectively, related to commissions and $3.0 million and $5.6 million, respectively, related to freight and mobilization. During the three and six months ended June 30, 2018, there was no impairment loss recorded in relation to the costs capitalized.

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Discontinued Operations

6 Months Ended

Jun. 30, 2018

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

4. Discontinued Operations

Spin-off of Exterran Corporation

In 2015 we completed the Spin-off. In order to effect the Spin-off and govern our relationship with Exterran Corporation after the Spin-off, we entered into several agreements with Exterran Corporation, which include but are not limited to the separation and distribution agreement, the tax matters agreement and the supply agreement. Certain terms of these agreements are described as follows:

• The separation and distribution agreement specifies our right to promptly receive payments from a subsidiary of Exterran Corporation based on a notional amount corresponding to payments received by Exterran Corporation’s subsidiaries from PDVSA Gas, in respect of the sale of Exterran Corporation’s subsidiaries’ and joint ventures’ previously nationalized assets after such amounts are collected by Exterran Corporation’s subsidiaries. During the six months ended June 30, 2017we received $19.7 million from Exterran Corporation pursuant to this term of the separation and distribution agreement. Exterran Corporation was due to receive the remaining principal amount as of June 30, 2018 of approximately $20.9 million. The separation and distribution agreement also specifies our right to receive a $25.0 million cash payment from a subsidiary of Exterran Corporation promptly following the occurrence of a qualified capital raise as defined in the Exterran Corporation credit agreement. Such a qualified capital raise occurred on April 4, 2017 and we received a cash payment of $25.0 million on April 11, 2017.

Generally, the separation and distribution agreement provides for cross-indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of Exterran Corporation’s business with Exterran Corporation. Pursuant to the separation and distribution agreement, we and Exterran Corporation generally release the other party from all claims arising prior to the Spin-off that relate to the other party’s business.

• The tax matters agreement governs the respective rights, responsibilities and obligations of Exterran Corporation and us with respect to tax liabilities and benefits, tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings and certain other matters regarding taxes. Subject to the provisions of this agreement Exterran Corporation and we agreed to indemnify the primary obligor of any return for tax periods beginning before and ending before or after the Spin-off (including any ongoing or future amendments and audits for these returns) for the portion of the tax liability (including interest and penalties) that relates to their respective operations reported in the filing. As of June 30, 2018, we classified $6.4 million of unrecognized tax benefits (including interest and penalties) as long-term liability associated with discontinued operations since it relates to operations of Exterran Corporation prior to the Spin-off. We have also recorded an offsetting $6.4 million indemnification asset related to this reserve as long-term assets associated with discontinued operations.

• The supply agreement, which expired November 2017, set forth the terms under which Exterran Corporation provided manufactured equipment, including the design, engineering, manufacturing and sale of natural gas compression equipment, on an exclusive basis to us and the Partnership, subject to certain exceptions. For the six months ended June 30, 2017, we purchased $79.3 million of newly-manufactured compression equipment from Exterran Corporation.

Other Discontinued Operations Activity

In December 2013, we abandoned our contract water treatment business as part of our continued emphasis on simplification and focus on our core businesses. The abandonment of this business meets the criteria established for recognition as discontinued operations under GAAP. Therefore certain deferred tax assets related to our contract water treatment business have been reported as discontinued operations in our condensed consolidated balance sheets. This business was previously included in our contract operations segment.

The following table summarizes the balance sheet data for discontinued operations (in thousands):

	June 30, 2018		December 31, 2017
	Exterran Corporation		Exterran Corporation		Contract Water Treatment Business		Total
Other current assets	$	300	$	300	$	—	$	300
Total current assets associated with discontinued operations	300		300		—		300
Other assets, net	6,421		6,421		—		6,421
Deferred income taxes (1)	—		—		6,842		6,842
Total assets associated with discontinued operations	$	6,721	$	6,721	$	6,842	$	13,563
Other current liabilities	$	297	$	297	$	—	$	297
Total current liabilities associated with discontinued operations	297		297		—		297
Deferred income taxes	6,421		6,421		—		6,421
Total liabilities associated with discontinued operations	$	6,718	$	6,718	$	—	$	6,718

——————

⁽¹⁾  Reduced by $0.6 million for current period tax amortization and $6.2 million for a valuation allowance recorded as a result of the Merger, whereby we assessed the available positive and negative evidence and concluded, based on the weight of the evidence, that a valuation allowance was required on our resulting net deferred tax asset position, with an offsetting increase to additional paid-in capital in our condensed consolidated balance sheet as of June 30, 2018. See Note 1(“Organization and Summary of Significant Accounting Policies”) for further details of the Merger.

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Inventory

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventory

5. Inventory

Inventory consisted of the following amounts (in thousands):

	June 30, 2018		December 31, 2017
Parts and supplies	$	67,092	$	72,528
Work in progress	15,378		18,163
Inventory	$	82,470	$	90,691

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Property, Plant and Equipment, Net

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, net

6. Property, Plant and Equipment, Net

Property, plant and equipment, net, consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Compression equipment, facilities and other fleet assets	$	3,261,824		$	3,192,363
Land and buildings	46,667			45,754
Transportation and shop equipment	101,867			100,133
Computer hardware and software	92,156			90,296
Other	11,674			12,419
Property, plant and equipment	3,514,188			3,440,965
Accumulated depreciation	(1,388,901		)	(1,364,038		)
Property, plant and equipment, net	$	2,125,287		$	2,076,927

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Contract Costs

6 Months Ended

Jun. 30, 2018

Other Income and Expenses [Abstract]

Contract Costs

3. Revenue from Contracts with Customers

Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we are entitled to receive in exchange for those goods or services. Sales and usage-based taxes that are collected from the customer are excluded from revenue.

The following table presents our revenue from contracts with customers disaggregated by revenue source (in thousands):

	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
Contract Operations (1):
0 - 1000 horsepower per unit	$	59,600	$	119,192
1,001 - 1,500 horsepower per unit	68,948		135,178
Over 1,500 horsepower per unit	35,904		70,314
Other (2)	998		1,963
Total contract operations (3)	165,450		326,647
Aftermarket Services (1):
Services	36,706		68,913
OTC parts and components sales	24,714		43,350
Total aftermarket services (4)	61,420		112,263
Total revenue (5)	$	226,870	$	438,910

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⁽¹⁾  We operate in two segments: contract operations and aftermarket services. See Note 16(“Segments”) for further details regarding our segments.

⁽²⁾  Primarily relates to fees associated with Archrock-owned non-compressor equipment.

⁽³⁾  Includes $1.4 million and $2.7 million for the three and six months ended June 30, 2018, respectively, related to billable maintenance on Archrock-owned units that was recognized at a point in time. All other revenue within contract operations is recognized over time.

⁽⁴⁾  All service revenue within aftermarket services is recognized over time. All OTC parts and components sales revenue is recognized at a point in time.

Contract Operations

We provide comprehensive contract operations services including the personnel, equipment, tools, materials and supplies to meet our customers’ natural gas compression needs. Based on the operating specifications at the customer location and each customer's unique needs, these services include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining equipment to provide natural gas compression services to our customers.

Natural gas compression services are generally satisfied over time, as the customer simultaneously receives and consumes the benefits provided by these services. Our performance obligation is a series in which the unit of service is one month, as the customer receives substantially the same benefit each month from the services regardless of the type of service activity performed, which may vary. If the transaction price is based on a fixed fee, revenue is recognized monthly on a straight-line basis over the period that we are providing services to the customer. Amounts invoiced to customers for costs associated with moving our compressor assets to a customer site are also included in the transaction price and are amortized over the initial contract term.

Variable consideration exists if customers are billed at a lesser standby rate when a unit is not running. We have elected to apply the invoicing practical expedient to recognize revenue for such variable consideration, as the invoice corresponds directly to the value transferred to the customer based on our performance completed to date. The rate for standby service is lower to reflect the decrease in costs and effort required to provide standby service when a unit is not running.

We also perform billable maintenance service on our natural gas compression equipment at the customer’s request on an as-needed basis. The performance obligation is satisfied, and revenue is recognized at the agreed-upon transaction price, at the point in time when service is complete and the customer has accepted the work performed and can obtain the remaining benefits of the service that the unit will provide.

As of June 30, 2018, we had $224.3 million of remaining performance obligations related to our contract operations segment. We have elected to apply the practical expedient to not consider the effects of the time value of money, as the expected time between the transfer of services and payment for such services is less than one year. The remaining performance obligations will be recognized through 2021 as follows (in thousands):

	2018		2019		2020		2021		Total
Contract operations remaining performance obligations	$	125,577	$	71,713	$	23,027	$	3,993	$	224,310

Aftermarket Services

We provide a full range of services to support the compression needs of customers. We sell OTC parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

We sell OTC parts and components needed for the maintenance or repair of customer-owned compression equipment. The performance obligation is generally satisfied at the point in time when delivery takes place and the customer obtains control of the part or component. The transaction price is the fixed sales price for the part stated in the contract. Revenue is recognized upon delivery, as we have a present right to payment and the customer has legal title.

Our aftermarket service activities include operations, maintenance, overhaul and reconfiguration services on customer-owned compression equipment on an as-needed basis or as part of a monthly maintenance schedule. The service activities performance obligation is satisfied over time, as the work performed enhances the customer-controlled asset and another entity would not have to substantially re-perform the work we completed if they were to fulfill the remaining performance obligation. The transaction price may be a fixed monthly service fee, a fixed quoted fee or entirely variable, calculated on a time and materials basis.

For service provided based on a fixed monthly fee, the performance obligation is a series in which the unit of service is one month. The customer receives substantially the same benefit each month from the service, regardless of the type of service activity performed, which may vary. As the progress towards satisfaction of the performance obligation is measured based on the passage of time, revenue is recognized monthly based on the fixed fee provided for in the contract.

For service provided based on a quoted fixed fee, progress towards satisfaction of the performance obligation is measured using an input method based on the actual amount of labor and material costs incurred. The amount of the transaction price recognized as revenue each reporting period is determined by multiplying the transaction price by the ratio of actual costs incurred to date to total estimated costs expected for the service. Significant judgment is involved in the estimation of the progress to completion. Any adjustments to the measure of the progress to completion will be accounted for on a prospective basis. Changes to the scope of service is recognized as an adjustment to the transaction price in the period in which the change occurs.

Service provided based on time and materials are generally short-term in nature and labor rates and parts pricing is agreed upon prior to commencing the service. We have elected to use the right-to-invoice practical expedient using an estimated gross margin percentage applied to actual costs incurred. The estimated gross margin percentage is fixed based on historical time and materials-based service. We evaluate the estimated gross margin percentage at the end of each reporting period and adjust the transaction price as appropriate.

We believe these fee- and cost-based inputs fairly depict our efforts to provide aftermarket services and the amount of revenue recognized is representative of the transfer of service and value that the customer will have received as of the reporting date. As of June 30, 2018 we have elected to apply the practical expedient to 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 Balances

Contract operations services are generally billed monthly at the beginning of the month in which service is being provided. For aftermarket services, billings will typically occur when parts are delivered or when service is complete; however, milestone billings may be used in longer-term projects. We recognize a contract asset when we have the right to consideration in exchange for goods or services transferred to a customer when the right is conditioned on something other than the passage of time. We recognize a contract liability when we have an obligation to transfer goods or services to a customer for which we have already received consideration. Freight billings to transport compressor assets and milestone billings on aftermarket services often result in a contract liability.

As of June 30, and January 1, 2018, our receivables from contracts with customers, net of allowance for doubtful accounts were $124.1 million and $115.6 million, respectively. As of June 30, and January 1, 2018, our contract liabilities were $9.5 million and $9.0 million, respectively, which are included in deferred revenue and other long-term liabilities in our condensed consolidated balance sheets. The increase in the contract liability balance was due to the deferral of $8.8 million primarily related to freight billings, partially offset by $8.3 million recognized as revenue during the period primarily related to freight billings and aftermarket services.

7. Contract Costs

We capitalize incremental costs to obtain a contract with a customer if we expect to recover those costs.Capitalized costs include commissions paid to our sales force to obtain contract operations contracts. We have applied the practical expedient to expense commissions paid for sales of service contracts and OTC parts and components within our aftermarket services segment as the amortization period is less than one year. As of June 30, and January 1, 2018, we recorded contract costs of $3.2 million and $2.3 million, respectively, associated with sales commissions.

We capitalize costs incurred to fulfill a contract if those costs relate directly to a contract, enhance resources that we will use in satisfying performance obligations and if we expect to recover those costs. Capitalized costs incurred to fulfill our customer contracts include freight charges to transport compressor assets before transferring services to the customer and mobilization activities associated with our contract operations services. As of June 30, and January 1, 2018, we recorded contract costs of $28.0 million and $19.2 million, respectively, associated with freight and mobilization.

Contract operations costs are amortized based on the transfer of service to which the assets relate, which is estimated to be 36 months based on average contract term, including anticipated renewals. We assess periodically whether the 36-month estimate fairly represents the average contract term and adjust as appropriate. Aftermarket services fulfillment costs are recognized based on the percentage-of-completion method applicable to the customer contract. Contract costs associated with commissions are amortized to SG&A. Contract costs associated with freight and mobilization are amortized to cost of sales (excluding depreciation and amortization). During the three and six months ended June 30, 2018, we amortized $0.4 million and $0.7 million, respectively, related to commissions and $3.0 million and $5.6 million, respectively, related to freight and mobilization. During the three and six months ended June 30, 2018, there was no impairment loss recorded in relation to the costs capitalized.

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Long-Term Debt

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-Term Debt

8. Long-Term Debt

Long-term debt consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Credit Facility	$	—		$	56,000
Partnership Credit Facility	770,500			674,306
Partnership’s 6% senior notes due April 2021	350,000			350,000
Less: Debt discount, net of amortization	(2,162		)	(2,523		)
Less: Deferred financing costs, net of amortization	(2,825		)	(3,338		)
	345,013			344,139
Partnership’s 6% senior notes due October 2022	350,000			350,000
Less: Debt discount, net of amortization	(3,108		)	(3,441		)
Less: Deferred financing costs, net of amortization	(3,542		)	(3,951		)
	343,350			342,608
Long-term debt	$	1,458,863		$	1,417,053

Credit Facility

On April 26, 2018, in connection with the Merger and Amendment No. 1, the Archrock Credit Facility was terminated. Upon termination, we repaid $63.2 million in borrowings and accrued and unpaid interest and fees outstanding. All commitments under the Archrock Credit Facility were terminated and the $15.4 million of letters of credit outstanding under the Archrock Credit Facility as of the Merger were converted to letters of credit under the Partnership Credit Facility. As a result of the termination, we recorded a debt extinguishment loss of $2.5 million.

At December 31, 2017, the weighted average annual interest rate, excluding the effect of interest rate swaps, on the outstanding balance under the Archrock Credit Facility was 3.3%. During the three and six months ended June 30, 2017, we incurred $0.2 million and $0.3 million, respectively, in commitment fees on the daily unused amount of the Archrock Credit Facility. We incurred $0.2 million in commitment fees in 2018 prior to the facility’s termination and were in compliance with all covenants under the Archrock Credit Facility through its closing.

Partnership Credit Facility

The Partnership Credit Facility is a five-year, $1.25 billion asset-based revolving credit facility that will mature on March 30, 2022 except that if any portion of the Partnership’s 6% senior notes due April 2021 are outstanding as of December 2, 2020, then maturity will instead be on December 2, 2020. In March 2017, the Partnership incurred $14.9 million in transaction costs related to the formation of the Partnership Credit Facility. Concurrent with entering into the Partnership Credit Facility, the Partnership expensed $0.6 million of unamortized deferred financing costs and recorded a debt extinguishment loss of $0.3 million related to the termination of its Former Credit Facility.

On February 23, 2018, the Partnership amended the Partnership Credit Facility to, among other things:

• increase the maximum Total Debt to EBITDA ratios, as defined in the Partnership Credit Facility agreement (see below for the revised ratios), effective as of the execution of Amendment No. 1 on February 23, 2018; and

• effective upon completion of the Merger on April 26, 2018:

– increase the aggregate revolving commitment from $1.1 billion to $1.25 billion;

– increase the amount available for the issuance of letters of credit from $25.0 million to $50.0 million;

– increase the basket sizes under certain covenants including covenants limiting our ability to make investments, incur debt, make restricted payments, incur liens and make asset dispositions;

– name Archrock Services, L.P., one of our subsidiaries, as a borrower under the Partnership Credit Facility and certain of our other subsidiaries as loan guarantors; and

– amend the definition of “Borrowing Base” to include certain assets of ours and our subsidiaries.

The Partnership incurred $3.3 million in transaction costs related to Amendment No. 1 which were included in other long-term assets in our condensed consolidated balance sheet and are being amortized over the term of the Partnership Credit Facility.

As of June 30, 2018, the Partnership had $15.4 million outstanding letters of credit under the Partnership Credit Facility and the applicable margin on amounts outstanding was 3.2%. The weighted average annual interest rate on the outstanding balance under the Partnership Credit Facility, excluding the effect of interest rate swaps, was 5.5% and 4.8% at June 30, 2018 and December 31, 2017, respectively. The Partnership incurred $0.6 million and $0.5 million in commitment fees on the daily unused amount of the Partnership Credit Facility and the Former Credit Facility during the three months ended June 30, 2018 and 2017, respectively, and $1.1 million and $0.9 million during the six months ended June 30, 2018 and 2017, respectively.

The Partnership must maintain the following consolidated financial ratios, as defined in the Partnership Credit Facility agreement:

EBITDA to Interest Expense	2.5 to 1.0
Senior Secured Debt to EBITDA	3.5 to 1.0
Total Debt to EBITDA
Through fiscal year 2018	5.95 to 1.0
Through fiscal year 2019	5.75 to 1.0
Through second quarter of 2020	5.50 to 1.0
Thereafter (1)	5.25 to 1.0

——————

⁽¹⁾  Subject to a temporary increase to 5.5 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the quarter in which the acquisition closes.

As of June 30, 2018, the Partnership had undrawn capacity of $464.1 million under the Partnership Credit Facility. As a result of the ratio requirements above, $287.6 million of the $464.1 million of undrawn capacity was available for additional borrowings as of June 30, 2018. As of June 30, 2018, the Partnership was in compliance with all covenants under the Partnership Credit Facility agreement.

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Derivatives

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

9. Derivatives

We are exposed to market risks associated with changes in interest rates. We use derivative instruments to minimize the risks and costs associated with financial activities by managing our exposure to interest rate fluctuations on a portion of our debt obligations. We do not use derivative instruments for trading or other speculative purposes.

At June 30, 2018, the Partnership was a party to the following interest rate swaps, which were entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates:

Expiration Date	Notional Value (in millions)
May 2019	$	100.0
May 2020	100.0
March 2022	300.0
	$	500.0

As of June 30, 2018, the weighted average effective fixed interest rate on the interest rate swaps was 1.8%. We have designated these interest rate swaps as cash flow hedging instruments so that any change in their fair values is recognized as a component of other comprehensive income (loss) until the hedged transaction affects earnings. At that time, amounts in other comprehensive income (loss) are reclassified into earnings and presented in the same income statement line item as the earnings effect of the hedged item. Prior to adoption of ASU 2017-12, we performed quarterly calculations to determine whether the swap agreements continued to be highly effective at achieving offsetting changes in cash flows attributable to the hedged risk. As the swap terms substantially coincide with the hedged item and are expected to offset changes in expected cash flows due to fluctuations in the variable rate, we expect the hedging relationship to continue to be highly effective. Upon adoption of ASU 2017-12, we perform subsequent quarterly prospective and retrospective hedge effectiveness assessments qualitatively unless facts and circumstances related to the hedging relationships change such that we can no longer assert qualitatively that the cash flow hedge relationships were and continue to be highly effective. We estimate that $2.8 million of deferred pre-tax gain attributable to interest rate swaps and included in our accumulated other comprehensive income (loss) at June 30, 2018, will be reclassified into earnings as interest income at then-current values during the next twelve months as the underlying hedged transactions occur. 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 this case, the cash settlements for these derivatives are classified as cash flows from financing activities in our condensed consolidated statements of cash flows.

In August 2017, the Partnership amended the terms of certain of its interest rate swap agreements, designated as cash flow hedges against the variability of future interest payments due under the Partnership Credit Facility, with a notional value of $300.0 million. The amended terms adjusted the fixed interest rate and extended the maturity dates to March 2022. These amendments effectively created new derivative contracts and terminated the old derivative contracts. As a result, as of the amendment date, we discontinued the original cash flow hedge relationships on a prospective basis and designated the amended interest rate swaps under new cash flow hedge relationships based on the amended terms. The fair value of the interest rate swaps immediately prior to the execution of the amendments was a liability of $0.7 million. The associated amount in accumulated other comprehensive income (loss) was amortized into interest expense over the original terms of the interest rate swaps through May 2018.

The following tables present the effect of derivative instruments designated as hedging instruments on our consolidated financial position and results of operations (in thousands):

	Fair Value Asset (Liability)
Balance Sheet Location	June 30, 2018		December 31, 2017
Other current assets	$	2,816	$	186
Other long-term assets	9,050		4,490
Accrued liabilities	—		(134		)
	$	11,866	$	4,542

	Pre-tax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives			Location of Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)
Derivatives designated as cash flow hedges:
Interest rate swaps
Three months ended June 30, 2018	$	2,245		Interest expense	$	(39	)
Three months ended June 30, 2017	(336		)	Interest expense	(830		)
Six months ended June 30, 2018	6,941			Interest expense	(513		)
Six months ended June 30, 2017	363			Interest expense	(1,843		)

	Location and Amount of Gain (Loss) Recognized in Income on Cash Flow Hedging Relationships
	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
	Interest Expense
Total amount of income and expense line items presented in the statement of operations in which the effects of cash flow hedges are recorded	$	23,337	$	45,884
Interest Contracts:
Amount of gain reclassified from accumulated other comprehensive income into income	$	207	$	153

The counterparties to the derivative agreements are major financial institutions. We monitor the credit quality of these financial institutions and do not expect non-performance by any counterparty, although such non-performance could have a material adverse effect on us. The Partnership has no specific collateral posted for its derivative instruments.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

10. Fair Value Measurements

The accounting standard for fair value measurements and disclosures establishes a fair value hierarchy that prioritizes the inputs of valuation techniques used to measure fair value into the following three categories:

• Level 1 — Quoted unadjusted prices for identical instruments in active markets to which we have access at the date of measurement.

• Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists or prices vary substantially over time or among brokered market makers.

• Level 3 — Model-derived valuations in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are those inputs that reflect our own assumptions regarding how market participants would price the asset or liability based on the best available information.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

On a quarterly basis, our interest rate swaps are valued based on the income approach (discounted cash flow) using market observable inputs, including forward London Interbank Offered Rate curves. These fair value measurements are classified as Level 2.

The following table presents our interest rate swaps asset and liability measured at fair value on a recurring basis with pricing levels as of the date of valuation (in thousands):

	June 30, 2018		December 31, 2017
Interest rate swaps asset	$	11,866	$	4,676
Interest rate swaps liability	—		(134		)

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2018, we recorded non-recurring fair value measurements related to our idle and previously-culled compressor units. Our estimate of the compressor units’ fair value was primarily based on either 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 impaired compressor units was $1.2 million and $2.6 million at June 30, 2018 and December 31, 2017, respectively. See Note 11(“Long-Lived 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 the Partnership Credit Facility approximates fair value due to its variable interest rate. The fair value of these outstanding borrowings was estimated using a discounted cash flow analysis based on interest rates offered on loans with similar terms to borrowers of similar credit quality, which are Level 3 inputs.

The fair value of our fixed rate debt was estimated based on quoted prices in inactive markets and is considered a Level 2 measurement. The following table summarizes the carrying amount and fair value of our fixed rate debt (in thousands):

	June 30, 2018		December 31, 2017
Carrying amount of fixed rate debt (1)	$	688,363	$	686,747
Fair value of fixed rate debt	696,000		702,000

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⁽¹⁾  Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 8(“Long-Term Debt”) for further details.

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Long-Lived Asset Impairment

6 Months Ended

Jun. 30, 2018

Asset Impairment Charges [Abstract]

Long-Lived Asset Impairment

11. Long-Lived 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 compressor units from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

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 compressor units 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 impairment review as recorded in our contract operations segment (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Idle compressor units retired from the active fleet	120		60		165		140
Horsepower of idle compressor units retired from the active fleet	27,000		23,000		50,000		51,000
Impairment recorded on idle compressor units retired from the active fleet	$	6,953	$	5,508	$	11,663	$	13,753

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Restructuring and Other Charges

6 Months Ended

Jun. 30, 2018

Restructuring and Related Activities [Abstract]

Restructuring and Other Charges

12. Restructuring and Other Charges

As discussed in Note 4(“Discontinued Operations”), we completed the Spin-off in 2015. During the three and six months ended June 30, 2017, we incurred $0.4 million and $0.8 million, respectively, of costs for retention benefits associated with the Spin-off that were directly attributable to Archrock. The restructuring charges associated with the Spin-off are not directly attributable to our reportable segments because they primarily represent costs incurred within the corporate function. No such costs were incurred subsequent to December 31, 2017.

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

13. Stock-Based Compensation

Stock Incentive Plan

In April 2013, we adopted the 2013 Plan to provide for the granting of stock options, restricted stock, restricted stock units, stock appreciation rights, performance units, other stock-based awards and dividend equivalent rights to employees, directors and consultants of Archrock. The 2013 Plan is administered by the compensation committee of our board of directors. Under the 2013 Plan, the maximum number of shares of common stock available for issuance pursuant to awards is 10,100,000. Each option and stock appreciation right granted counts as one share against the aggregate share limit, and any share subject to a stock settled award other than a stock option, stock appreciation right or other award for which the recipient pays intrinsic value counts as 1.75 shares against the aggregate share limit. Shares subject to awards granted under the 2013 Plan that are subsequently canceled, terminated, settled in cash or forfeited (excluding shares withheld to satisfy tax withholding obligations or to pay the exercise price of an option) are, to the extent of such cancellation, termination, settlement or forfeiture, available for future grant under the 2013 Plan. Cash-settled awards are not counted against the aggregate share limit. No additional grants have been or may be made under the 2007 Plan following the adoption of the 2013 Plan. Previous grants made under the 2007 Plan will continue to be governed by that plan and the applicable award agreements.

Stock Options

Stock options are granted at fair market value at the grant date, are exercisable according to the vesting schedule established by the compensation committee of our board of directors in its sole discretion and expire no later than seven years after the grant date. Stock options generally vest one-third per year on each of the first three anniversaries of the grant date, subject to continued service through the applicable vesting date.

The following table presents stock option activity during the six months ended June 30, 2018:

	Stock Options (in thousands)		Weighted Average Exercise Price Per Share		Weighted Average Remaining Life (in years)	Aggregate Intrinsic Value (in thousands)
Options outstanding, January 1, 2018	489		$	12.28
Exercised	(30	)	8.79
Canceled	(53	)	13.96
Options outstanding and exercisable, June 30, 2018	406		12.31		1.2	$	1,261

Intrinsic value is the difference between the market value of our stock and the exercise price of each stock option multiplied by the number of stock options outstanding for those stock options where the market value exceeds their exercise price. The total intrinsic value of stock options exercised during six months ended June 30, 2018 was $0.1 million.

Restricted Stock, Stock-Settled Restricted Stock Units, Performance Units, Cash-Settled Restricted Stock Units and Cash Settled Performance Units

For grants of restricted stock, restricted stock units and performance units, we recognize compensation expense over the vesting period equal to the fair value of our common stock at the grant date. Our restricted stock, restricted stock units, and performance units include rights to receive dividends or dividend equivalents. We remeasure the fair value of cash-settled restricted stock units and cash-settled performance units and record a cumulative adjustment of the expense previously recognized. Our obligation related to the cash-settled restricted stock units and cash settled performance units is reflected as a liability in our condensed consolidated balance sheets. Restricted stock, stock-settled restricted stock units, cash-settled restricted stock units and cash-settled performance units generally vest one-third per year on dates as specified in the applicable award agreement, subject to continued service through the applicable vesting date. Stock-settled performance units cliff vest at the end of the performance period as specified in the terms of the applicable award agreement, subject to continued service through the applicable vesting date.

The following table presents restricted stock, restricted stock unit, performance unit, cash-settled restricted stock unit and cash- settled performance unit activity during the six months ended June 30, 2018:

	Shares (in thousands)		Weighted Average Grant Date Fair Value Per Share
Non-vested awards, January 1, 2018	1,440		$	10.39
Granted	1,098		9.52
Converted (1)	140		7.03
Vested	(503	)	9.56
Canceled	(47	)	11.33
Non-vested awards, June 30, 2018 (2)	2,128		9.89

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⁽¹⁾  Reflects conversion of Partnership phantom units into Archrock restricted stock units pursuant to the Merger See “Partnership Long-Term Incentive Plan” section below for detail regarding the conversion of awards.

⁽²⁾  Non-vested awards as of June 30, 2018 are comprised of 272,000 cash-settled restricted stock units and cash-settled performance units and 1,856,000 restricted shares and stock-settled performance units.

As of June 30, 2018, we expect $16.4 million of unrecognized compensation cost related to unvested restricted stock, stock-settled restricted stock units, performance units, cash-settled restricted stock units and cash-settled performance units to be recognized over the weighted-average period of 2.5 years.

Partnership Long-Term Incentive Plan

In April 2017, the Partnership adopted the 2017 Partnership LTIP to provide for the benefit of employees, directors and consultants of the Partnership, us and our respective affiliates. The 2017 Partnership LTIP provided for the issuance of unit options, unit appreciation rights, restricted units, phantom units, performance awards, bonus awards, distribution equivalent rights, cash awards and other unit based awards. Previous grants made under the 2006 Partnership LTIP continued to be governed by the 2006 Partnership LTIP and the applicable award agreements. We recognized compensation expense over the vesting period equal to the fair value of the Partnership’s common units at the grant date. Phantom units granted under the 2017 and 2006 LTIP may include nonforfeitable tandem distribution equivalent rights to receive cash distributions on unvested phantom units in the quarter in which distributions are paid on common units. Phantom units generally vested one-third per year on dates as specified in the applicable award agreements subject to continued service through the applicable vesting date. During the six months ended June 30, 2018, 53,091 phantom units vested with a weighted average grant date fair value per unit of $11.24.

Pursuant to the Merger, all outstanding phantom units previously granted under the 2017 and 2006 Partnership LTIP were converted into comparable awards based on Archrock’s common shares. As such, all outstanding phantom units were converted, effective as of the closing of the Merger, into Archrock restricted stock units. See Note 1 (“Organization and Summary of Significant Accounting Policies”) for further details regarding the Merger. Each Archrock restricted stock unit will be subject to the same vesting, forfeiture and other terms and conditions applicable to the converted Partnership phantom units. Under Accounting Standards Codification Topic 718, Compensation - Stock Compensation, we determined that there was no additional compensation cost to record as the conversion of awards did not result in incremental fair value.

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Cash Dividends

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Cash Dividends

14. Cash Dividends

The following table summarizes our dividends per common share:

Declaration Date	Payment Date	Dividends per Common Share		Total Dividends (in thousands)
January 19, 2017	February 15, 2017	$	0.12	$	8,458
April 26, 2017	May 16, 2017	0.12		8,534
July 26, 2017	August 15, 2017	0.12		8,536
October 20, 2017	November 15, 2017	0.12		8,536
January 18, 2018	February 14, 2018	0.12		8,532
April 25, 2018	May 15, 2018	0.12		15,486

On July 25, 2018, our board of directors declared a quarterly dividend of $0.132 per share of common stock to be paid on August 14, 2018 to stockholders of record at the close of business on August 7, 2018.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

15. Commitments and Contingencies

Performance Bonds

In the normal course of business we have issued performance bonds to various state authorities that ensure payment of certain obligations. We have also issued a bond to protect our 401(k) retirement plan against losses caused by acts of fraud or dishonesty. The bonds have expiration dates in 2018 through the first quarter of 2020 and maximum potential future payments of $2.3 million. As of June 30, 2018, we were in compliance with all obligations to which the performance bonds pertain.

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, 2018 and December 31, 2017, we accrued $2.5 million and $1.7 million, respectively, 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 for the period in which the resolution occurs.

Subject to the provisions of the tax matters agreement between Exterran Corporation and us, both parties agreed to indemnify the primary obligor of any return for tax periods beginning before and ending before or after the Spin-off (including any ongoing or future amendments and audits for these returns) for the portion of the tax liability (including interest and penalties) that relates to their respective operations reported in the filing. The tax contingencies mentioned above relate to tax matters for which we are responsible in managing the audit. As of both June 30, 2018 and December 31, 2017, we recorded an indemnification liability (including penalties and interest), in addition to the tax contingency above, of $1.6 million for our share of non-income based tax contingencies related to audits being managed by Exterran Corporation.

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. In addition, we have a minimal amount of insurance on our offshore assets. 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.

Indemnification Obligations

In connection with the Spin-off, we entered into a separation and distribution agreement which provides for cross-indemnities between Exterran Corporation’s operating subsidiary and us and established procedures for handling claims subject to indemnification and related matters. Generally, the separation and distribution agreement provides for cross-indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of Exterran Corporation’s business with Exterran Corporation. Pursuant to the separation and distribution agreement, we and Exterran Corporation will generally release the other party from all claims arising prior to the Spin-off that relate to the other party’s business.

Litigation and Claims

In the ordinary course of business, we are involved in various pending or threatened legal actions. While management is unable to predict the ultimate outcome of these actions, it believes 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.

Heavy Equipment

In 2011, the Texas Legislature enacted changes related to the appraisal of natural gas compressors for ad valorem tax purposes by expanding the definitions of “Heavy Equipment Dealer” and “Heavy Equipment” effective from the beginning of 2012. Under the revised Heavy Equipment Statutes, we believe we are a Heavy Equipment Dealer, that our natural gas compressors are Heavy Equipment and that we, therefore, are required to file our ad valorem taxes under this new methodology. We further believe that our natural gas compressors are taxable under the Heavy Equipment Statutes in the counties where we maintain a business location and keep natural gas compressors instead of where the compressors may be located on January 1 of a tax year. As a result of this new methodology, our ad valorem tax expense (which is reflected in our condensed consolidated statements of operations as a component of cost of sales (excluding depreciation and amortization)) includes a benefit of $9.5 million during the six months ended June 30, 2018. Since the change in methodology became effective in 2012, we have recorded an aggregate benefit of $87.7 million as of June 30, 2018, of which $21.4 million has been agreed to by a number of appraisal review boards and county appraisal districts and $66.3 million has been disputed and is currently in litigation. A large number of appraisal review boards denied our position, although some accepted it, and our wholly owned subsidiary, Archrock Services Leasing LLC, formerly known as EES Leasing, and the Partnership’s subsidiary, Archrock Partners Leasing LLC, formerly known as EXLP Leasing, filed 176 petitions for review in the appropriate district courts with respect to the 2012 tax year, 109 petitions for review in the appropriate district courts with respect to the 2013 tax year, 115 petitions for review in the appropriate district courts with respect to the 2014 tax year, 120 petitions for review in the appropriate district courts with respect to the 2015 tax year, 113 petitions for review in the appropriate district courts with respect to the 2016 tax year and 113 petitions for review in the appropriate district courts with respect to the 2017 tax year.

To date, only five cases have advanced to the point of trial or submission of summary judgment motions on the merits, and only three cases have been decided, with two of the decisions having been rendered by the same presiding judge. All three of those decisions were appealed, and all three of the appeals have been decided by intermediate appellate courts.

On October 17, 2013, the 143rd Judicial District Court of Loving County, Texas ruled in EXLP Leasing LLC & EES Leasing LLC v. Loving County Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the district court further held that the Heavy Equipment Statutes were unconstitutional as applied to EES Leasing’s and EXLP Leasing’s compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Eighth Court of Appeals in El Paso, Texas. On September 23, 2015, the Eighth Court of Appeals ruled in EES Leasing’s and EXLP Leasing’s favor by overruling the 143rd District Court’s constitutionality ruling. The Eighth Court of Appeals also ruled, however, that EES Leasing’s and EXLP Leasing’s natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue.

On October 28, 2013, the 143rd Judicial District Court of Ward County, Texas ruled in EES Leasing LLC & EXLP Leasing LLC v. Ward County Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the court held that the Heavy Equipment Statutes were unconstitutional as applied to their compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Eighth Court of Appeals in El Paso, Texas, and the Ward County Appraisal District cross-appealed the district court’s rulings that EES Leasing’s and EXLP Leasing’s compressors qualify as Heavy Equipment. On September 23, 2015, the Eighth Court of Appeals ruled in EES Leasing’s and EXLP Leasing’s favor by overruling the 143rd District Court’s constitutionality ruling and affirming its ruling that EES Leasing’s and EXLP Leasing’s compressors qualify as Heavy Equipment. The Eighth Court of Appeals also ruled, however, that EES Leasing’s and EXLP Leasing’s natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue.

The Ward County Appraisal District and Loving County Appraisal District each filed (on January 27, 2016 and February 10, 2016, respectively) a petition asking the Texas Supreme Court to review its respective Eighth Court of Appeals decision. On March 11, 2016, EES Leasing and EXLP Leasing filed responses to the appraisal districts’ petitions and cross-petitions for review in each case asking the Texas Supreme Court to also review the Eighth Court of Appeals’ determination that natural gas compressors are taxable in the counties where they were located on January 1 of the tax year at issue. The Ward County Appraisal District filed its response to EES Leasing’s and EXLP Leasing’s cross-petition on June 6, 2016, and EES Leasing and EXLP Leasing filed their reply on June 21, 2016. The Loving County Appraisal District filed its response to EES Leasing’s and EXLP Leasing’s cross-petition on May 27, 2016, and EES Leasing and EXLP Leasing filed their reply on June 10, 2016.

On March 18, 2014, the 10th Judicial District Court of Galveston, Texas ruled in EXLP Leasing LLC & EES Leasing LLC v. Galveston Central Appraisal District that EES Leasing and EXLP Leasing are Heavy Equipment Dealers and that their compressors qualify as Heavy Equipment, but the court held the Heavy Equipment Statutes unconstitutional as applied to their compressors. EES Leasing and EXLP Leasing appealed the district court’s constitutionality holding to the Fourteenth Court of Appeals in Houston, Texas. On August 25, 2015, the Fourteenth Court of Appeals issued a ruling stating that EES Leasing’s and EXLP Leasing’s compressors are taxable in the counties where they were located on January 1 of the tax year at issue, and it remanded the case to the district court for further evidence on the issue of whether the Heavy Equipment Statutes are constitutional as applied to EES Leasing’s and EXLP Leasing’s compressors. On November 24, 2015, EES Leasing and EXLP Leasing filed a petition asking the Texas Supreme Court to review this decision. On March 21, 2016, the Galveston Central Appraisal District filed a response to EES Leasing’s and EXLP Leasing’s petition for review, and EES Leasing and EXLP Leasing filed their reply on April 26, 2016.

In EES Leasing v. Irion County Appraisal District, EES Leasing and the appraisal district each filed motions for summary judgment in the 51st District Court concerning the applicability and constitutionality of the Heavy Equipment Statutes. On May 20, 2014, the district court entered an order denying both motions for summary judgment, holding that a fact issue existed as to the applicability of the Heavy Equipment Statutes to the one compressor at issue. The presiding judge for the 51st District Court has since consolidated the 2012 tax year case with EES Leasing’s 2013 tax year case, which also included EXLP Leasing as a party. On August 27, 2015, the presiding judge abated the combined case, EES Leasing LLC and EXLP Leasing LLC v. Irion County Appraisal District, until the final resolution of the appellate cases considering the constitutionality of the Heavy Equipment Statutes, or further order of the court.

EES Leasing and EXLP Leasing also filed a motion for summary judgment in EES Leasing LLC & EXLP Leasing LLC v. Harris County Appraisal District, pending in the 189th Judicial District Court of Harris County, Texas. The court heard arguments on the motion on December 6, 2013 but has yet to rule. No trial date has been set.

On June 3, 2015, the Fourth Court of Appeals in San Antonio, Texas issued a decision reversing the 406th District Court’s dismissal of EES Leasing’s and EXLP Leasing’s tax appeals for want of jurisdiction. In EXLP Leasing LLC et. al v. Webb County Appraisal District, United Independent School District (“United ISD”) intervened as a party in interest and sought to dismiss the lawsuit arguing that the district court was without jurisdiction to hear the appeal. Under Section 42.08(b) of the Texas Tax Code, a property owner must pay before the delinquency date the lesser of (1) the amount of taxes due on the portion of the taxable value of the property that is not in dispute or (2) the amount of taxes due on the property under the order from which the appeal is taken. EES Leasing and EXLP Leasing paid zero taxes to Webb County because the entire amount of tax assessed by Webb County was in dispute. Instead, as required by the Heavy Equipment Statutes and Texas Comptroller forms, EES Leasing and EXLP Leasing paid taxes on the compressors at issue to Victoria County, where they maintain their place of business and keep natural gas compressors. The Webb County Appraisal District and United ISD contested EES Leasing’s and EXLP Leasing’s position that the Heavy Equipment Statutes contain situs provisions requiring that taxes be paid where the dealer has a business location and keeps its natural gas compressors, instead arguing that taxes are payable to the county where each compressor is located as of January 1 of the tax year at issue. The district court granted United ISD’s motion to dismiss on April 1, 2014 and declined EES Leasing’s and EXLP Leasing’s motion to reconsider. The Fourth Court of Appeals reversed, holding that, based on the plain meaning of Section 42.08(b)(1), and because the entire amount was in dispute, EES Leasing and EXLP Leasing were not required to prepay disputed taxes to invoke the trial court’s jurisdiction. The Fourth Court of Appeals denied United ISD’s request for a rehearing. On September 29, 2015, United ISD filed a petition for review in the Texas Supreme Court. On December 4, 2015, the Texas Supreme Court denied United ISD’s petition for review.

United ISD has four delinquency lawsuits concerning the 2012 tax year pending against EES Leasing and EXLP Leasing in the 49th District Court of Webb County, Texas. The cases have been abated pending the resolution of EES Leasing’s and EXLP Leasing’s 2012 tax year case pending in the 406th Judicial District Court of Webb County, Texas.

On September 2, 2016, the Texas Supreme Court requested that consolidated merits briefs be filed in EES Leasing’s and EXLP Leasing’s cases against the Loving County Appraisal District, Ward County Appraisal District, and Galveston Central Appraisal District, as well as two similar cases involving different taxpayers. On September 19, 2016, the Supreme Court entered a consolidated briefing schedule for the five cases. Consolidated briefing was completed on February 7, 2017.

On March 10, 2017, the Texas Supreme Court granted EXLP Leasing’s and EES Leasing’s petition for review in EXLP Leasing LLC & EES Leasing LLC v. Galveston Central Appraisal District. The case was argued before the Texas Supreme Court on October 10, 2017. On March 2, 2018, the Texas Supreme Court ruled in favor of EXLP Leasing and EES Leasing by reversing the Fourteenth Court of Appeals’ decision. In doing so, the Supreme Court upheld the validity of the Heavy Equipment Rules and held that compressors are taxable in the county of EXLP Leasing’s and EES Leasing’s business location, not where each compressor is located on January 1. On April 2, 2018, the Galveston Central Appraisal District filed a motion for rehearing. On April 3, 2018, EXLP Leasing and EES Leasing filed a letter stating that they do not plan to file a response to Galveston Central Appraisal District’s motion for rehearing unless the Texas Supreme Court requests they do so.

We continue to believe that the revised statutes are constitutional as applied to natural gas compressors and that under the revised statutes our natural gas compressors are taxable in the counties where we maintain a business location and keep natural gas compressors. Recognizing the similarity of the issues and that these cases will ultimately be resolved by the Texas appellate courts, most of the remaining 2012-2017 district court cases have been formally or effectively abated pending final judgment from the Texas Supreme Court.

If we are unsuccessful in our litigation, we would be required to pay ad valorem taxes up to the aggregate benefit we have recorded, and the additional ad valorem tax payments may also be subject to substantial penalties and interest. In addition, while we do not expect the ultimate determination of the issue of where the natural gas compressors are taxable under the Heavy Equipment Statutes would have an impact on the amount of taxes due, we could be subject to substantial penalties if we are unsuccessful on this issue. Also, if we are unsuccessful in our litigation, or if legislation is enacted in Texas that repeals or alters the Heavy Equipment Statutes such that in the future we do not qualify as a Heavy Equipment Dealer or our compressors do not qualify as Heavy Equipment, then we would likely be required to pay these ad valorem taxes under the old methodology going forward, which would increase our quarterly cost of sales expense up to approximately the amount of our then-most recent quarterly benefit recorded. If this litigation is resolved against us in whole or in part, or if in the future we do not qualify as a Heavy Equipment Dealer or our compressors do not qualify as Heavy Equipment because of new or revised Texas statutes, we will incur additional taxes and could be subject to substantial penalties and interest, which would impact our future results of operations, financial position and cash flows, including our ability to pay dividends.

Other

In addition, the SEC has been conducting an investigation in connection with certain previously disclosed errors and possible irregularities at one of our former international operations. We and Exterran Corporation are cooperating with the SEC in the investigation, which has included, among other things, responding to subpoenas for documents and testimony related to the restatement of prior period consolidated and combined financial statements and related disclosures and compliance with the FCPA, which were also being provided to the DOJ at its request. The SEC staff has provided notice that they have concluded their investigation relating to compliance with the FCPA and that they do not intend to recommend an enforcement action concerning compliance with the FCPA, and the DOJ has also provided notice that it does not intend to proceed with any further investigation or enforcement.

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Segments

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segments

16. Segments

We manage our business segments primarily based upon 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 part 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.

The following table presents revenue and other financial information by segment during the three and six months ended June 30, 2018 and 2017 (in thousands): 

	Contract Operations		Aftermarket Services		Total
Three months ended June 30, 2018
Revenue	$	165,450	$	61,420	$	226,870
Gross margin	97,641		10,627		108,268
Three months ended June 30, 2017
Revenue	$	151,114	$	46,868	$	197,982
Gross margin	88,871		7,259		96,130
Six months ended June 30, 2018
Revenue	$	326,647	$	112,263	$	438,910
Gross margin	194,243		19,133		213,376
Six months ended June 30, 2017
Revenue	$	301,098	$	86,769	$	387,867
Gross margin	174,758		13,428		188,186

The following table reconciles total gross margin to income (loss) before income taxes (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Total gross margin	$	108,268		$	96,130		$	213,376		$	188,186
Less:
Selling, general and administrative	26,649			25,162			54,157			52,715
Depreciation and amortization	43,331			47,248			87,786			95,020
Long-lived asset impairment	6,953			5,508			11,663			13,753
Restatement and other charges	(1,076		)	1,920			(591		)	2,721
Restructuring and other charges	—			366			—			823
Interest expense	23,337			22,504			45,884			43,925
Debt extinguishment costs	2,450			—			2,450			291
Merger-related costs	5,686			—			9,811			—
Other income, net	(1,644		)	(962		)	(2,789		)	(1,756		)
Income (loss) before income taxes	$	2,582		$	(5,616	)	$	5,005		$	(19,306	)

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Organization and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Income (Loss) Attributable to Archrock Common Stockholders Per Common Share

Income (Loss) Attributable to Archrock Common Stockholders Per Common Share

Basic income (loss) attributable to Archrock common stockholders 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 income (loss) attributable to Archrock common stockholders per common share is determined by dividing income (loss) attributable to Archrock common stockholders 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, no effect is given to participating securities because they do not have a contractual obligation to participate in our losses.

Diluted income (loss) attributable to Archrock common stockholders per common share is computed using the weighted average number of shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding options and stock to be issued pursuant to our employee stock purchase plan unless their effect would be anti-dilutive.

Comprehensive Income (Loss)

Comprehensive Income (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 income (loss) consists of changes in the fair value of derivative instruments, net of tax, that are designated as cash flow hedges, amortization of terminated interest rate swaps and adjustments related to changes in our ownership of the Partnership.

Recent Account Policies

Accounting Standards Updates Implemented

ASU 2018-05 was issued in March 2018 to clarify the income taxes disclosure requirements as they pertain to SAB 118, including the requirement to disclose a reasonable estimate, if determinable, of the tax effects of the TCJA in the reporting period in which the TCJA was enacted, as well as additional disclosures required in the following interim reporting periods if the measurement period approach is used. In accordance with ASU 2018-05, we disclosed a reasonable estimate of the income tax effects of the TCJA on our consolidated financial statements in our 2017 Form 10-K and there have been no changes to this estimate. We anticipate finalizing the amounts in connection with the completion of our 2017 income tax returns in the fourth quarter of 2018.

On January 1, 2018, we adopted ASU 2018-02 which allows for a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the TCJA. As a result of the TCJA’s corporate rate reduction, we had $0.3 million of stranded tax effects in accumulated other comprehensive income related to our derivative instruments and terminated interest rate swaps, which we elected to reclassify to accumulated deficit.

On January 1, 2018, we adopted ASU 2017-12 using the modified retrospective approach to existing cash flow hedge relationships as of January 1, 2018. ASU 2017-12 expands and refines hedge accounting for both financial and nonfinancial risk components, aligns the recognition and presentation of the effects of the hedging instrument and hedged item in the financial statements and eliminates the requirement to separately measure and report hedge ineffectiveness. As a result of the adoption of ASU 2017-12, we recognized a net gain of $0.4 million as a cumulative-effect adjustment to opening retained earnings and a corresponding adjustment to other comprehensive income (loss) to reverse the cumulative ineffectiveness previously recognized in interest expense.

On January 1, 2018, we adopted ASU 2016-15 on a retrospective basis. ASU 2016-15 addresses diversity in practice and simplifies several elements of cash flow classification including how certain cash receipts and cash payments are classified in the statement of cash flows. ASU 2016-15 did not have an impact on our condensed consolidated statement of cash flow for the six months ended June 30, 2017.

Revenue Recognition Update

On January 1, 2018, we adopted the Revenue Recognition Update using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We recognized the cumulative effect of initially applying the Revenue Recognition Update as an adjustment to the opening balance of retained earnings. For contracts that were modified before the effective date, we identified performance obligations on the basis of the current version of the contract, which included any contract modifications since inception. The application of the practical expedient for contract modifications did not have a material effect on the adjustment to retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods.

Under previous guidance, contract operations revenue was recognized when earned, which generally occurs monthly when the service is provided under our customer contracts. Under the Revenue Recognition Update the timing of revenue recognition is impacted by contractual provisions for service availability guarantees of our compressor assets and re-billable costs associated with moving our compressor assets to a customer site. These changes are further discussed below and did not result in a material difference from previous practice for contract operations.

The Revenue Recognition Update resulted in a significant change related to our aftermarket services operations, maintenance, overhaul and reconfiguration services. Under previous guidance, revenue was recognized on a completed contract basis as products were delivered and title was transferred or services were performed for the customer. Under the Revenue Recognition Update, these services are recognized as revenue over time, using output or input methods to measure the progress toward complete satisfaction of the performance obligation based on the nature of the goods or services being provided. The adoption did not result in a material difference in the amount or timing of revenues for aftermarket services parts and components sales.

The Revenue Recognition Update provides guidance on contract costs that should be recognized as assets and amortized over the period that the related goods or services transfer to the customer. Certain costs that were previously expensed as incurred, such as sales commissions and freight charges to transport compressor assets, are deferred and amortized.

The following table summarizes the cumulative impact of the adoption of the Revenue Recognition Update on the opening balance sheet (in thousands):

	December 31, 2017			Adjustments Due to the Revenue Recognition Update			January 1, 2018
Assets
Accounts receivable, trade	$	113,416		$	7,883		$	121,299
Inventory	90,691			(6,917		)	83,774
Contract costs	—			21,524			21,524
Liabilities
Accrued liabilities	$	71,116		$	209		$	71,325
Deferred revenue	4,858			3,188			8,046
Deferred income taxes	97,943			4,427			102,370
Equity
Accumulated deficit	$	(2,241,243	)	$	14,666		$	(2,226,577	)

The following tables summarize the impact of the application of the Revenue Recognition Update on our condensed consolidated balance sheet and condensed consolidated statement of operations (in thousands):

	June 30, 2018
Balance Sheet	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Assets
Accounts receivable, trade	$	130,596		$	115,923		$	14,673
Inventory	82,470			97,463			(14,993		)
Contract costs	31,240			—			31,240
Liabilities
Accounts payable, trade	$	91,818		$	91,776		$	42
Accrued liabilities	67,152			66,930			222
Deferred revenue	8,859			7,037			1,822
Deferred income taxes	2,568			2,329			239
Other long-term liabilities	17,536			17,514			22
Equity
Additional paid-in capital (1)	$	3,150,118		$	3,140,754		$	9,364
Accumulated deficit	(2,252,349		)	(2,271,558		)	19,209

——————

⁽¹⁾  Represents the impact of the Revenue Recognition Update on net income attributable to noncontrolling interest which was reclassed to additional paid-in capital pursuant to the Merger.

	Three Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	165,450		$	166,341		$	(891	)
Aftermarket services	61,420			56,660			4,760
Total revenue	226,870			223,001			3,869
Cost of sales (excluding depreciation and amortization):
Contract operations	67,809			71,956			(4,147		)
Aftermarket services	50,793			47,103			3,690
Selling, general and administrative	26,649			27,025			(376		)
Benefit from income taxes	(1,567		)	(4,097		)	2,530
Less: Net income attributable to the noncontrolling interest	(2,212		)	(1,735		)	(477		)
Net income attributable to Archrock stockholders	1,937			242			1,695

	Six Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	326,647		$	329,325		$	(2,678	)
Aftermarket services	112,263			101,442			10,821
Total Revenue	438,910			430,767			8,143
Cost of sales (excluding depreciation and amortization):
Contract operations	132,404			141,150			(8,746		)
Aftermarket services	93,130			85,011			8,119
Selling, general and administrative	54,157			55,127			(970		)
Benefit from income taxes	(1,213		)	(4,454		)	3,241
Less: Net income attributable to the noncontrolling interest	(8,097		)	(6,141		)	(1,956		)
Net loss attributable to Archrock stockholders	(1,879		)	(6,422		)	4,543

Accounting Standards Updates Not Yet Implemented

In June 2016, the FASB issued ASU 2016-13 that changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019 and early adoption is permitted. Entities will apply ASU 2016-13 provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02 that establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. Under the new guidance, lessor accounting is largely unchanged. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach that involves recasting the comparative periods in the year of initial application is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain optional transition practical expedients available. We intend to adopt ASU 2016-02 on January 1, 2019 and are currently assessing the practical expedients.

Though our assessment of the impact of the adoption of ASU 2016-02 is ongoing, we anticipate significant changes to our consolidated balance sheets and disclosures based on the requirements prescribed by the new standard. We do not believe the standard will materially affect our consolidated statements of operations. We are in the process of assessing changes to our internal control structure and will continue to evaluate our business processes, systems and accounting policies that are necessary to implement this standard.

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Organization and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Effects of changes in ownership interest

The following table presents the effects of changes in our ownership interest in the Partnership on the equity attributable to Archrock stockholders:

	Six Months Ended June 30,
	2018			2017
Net loss attributable to Archrock stockholders	$	(1,879	)	$	(18,372	)
Decrease in Archrock stockholders’ additional paid-in capital for purchase of Partnership common units	52,815			—
Change from net loss attributable to Archrock stockholders and transfers from noncontrolling interest	$	50,936		$	(18,372	)

Summary of net income (loss) attributable to Exterran common stockholders used in the calculation of basic and diluted income (loss) per common share

The following table summarizes net income (loss) attributable to Archrock common stockholders used in the calculation of basic and diluted loss per common share (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net income (loss) attributable to Archrock stockholders	$	1,937		$	(6,687	)	$	(1,879	)	$	(18,372	)
Less: Net income attributable to participating securities	(157		)	(180		)	(313		)	(334		)
Net income (loss) attributable to Archrock common stockholders	$	1,780		$	(6,867	)	$	(2,192	)	$	(18,706	)

Schedule of potential shares of common stock that were included in computing diluted income (loss) attributable to Exterran common stockholders per common share

The following table shows the potential shares of common stock that were included in computing diluted income (loss) attributable to Archrock common stockholders per common share (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Weighted average common shares outstanding including participating securities	112,995		70,908		92,130		70,833
Less: Weighted average participating securities outstanding	(1,699	)	(1,320	)	(1,541	)	(1,337	)
Weighted average common shares outstanding — used in basic income (loss) per common share	111,296		69,588		90,589		69,496
Net dilutive potential common shares issuable:
On exercise of options	99		*		*		*
On the settlement of employee stock purchase plan shares	7		—		*		—
Weighted average common shares outstanding — used in diluted income (loss) per common share	111,402		69,588		90,589		69,496

——————

* Excluded from diluted income (loss) per common share as their inclusion would have been anti-dilutive.

Schedule of potential shares of common stock issuable, excluded from computation of diluted income (loss), attributable to Exterran common stockholders per common share

The following table shows the potential shares of common stock issuable that were excluded from computing diluted income (loss) attributable to Archrock common stockholders per common share as their inclusion would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2018	2017	2018	2017
Net dilutive potential common shares issuable:
On exercise of options where exercise price is greater than average market value for the period	187	282	205	297
On exercise of options	—	108	89	125
On the settlement of employee stock purchase plan shares	—	—	5	—
Net dilutive potential common shares issuable	187	390	299	422

Schedule of changes in accumulated other comprehensive income (loss) by component, net of tax, excluding noncontrolling interest

The following table presents the changes in accumulated other comprehensive income (loss) by component, net of tax, and excluding noncontrolling interest, during the six months ended June 30, 2017 and 2018 (in thousands):

	Derivatives Cash Flow Hedges
Accumulated other comprehensive loss, January 1, 2017	$	(1,678	)
Gain recognized in other comprehensive income, net of tax(1)	173
Loss reclassified from accumulated other comprehensive loss, net of tax(2)	569
Other comprehensive income attributable to Archrock stockholders	742
Accumulated other comprehensive loss, June 30, 2017	$	(936	)
Accumulated other comprehensive income, January 1, 2018	$	1,197
Gain recognized in other comprehensive income, net of tax(3)	2,051
Loss reclassified from accumulated other comprehensive loss, net of tax(4)	456
Merger-related adjustments (5)	5,670
Other comprehensive income attributable to Archrock stockholders	8,177
Accumulated other comprehensive income, June 30, 2018	$	9,374

——————

⁽¹⁾  During the three months ended June 30, 2017, we recognized a loss of $0.1 million and a tax benefit of $0.1 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2017, we recognized a gain of $0.2 million and immaterial tax expense in other comprehensive income (loss) related to change in the fair value of derivative financial instruments.

⁽²⁾  During the three months ended June 30, 2017, we reclassified a loss of $0.4 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2017, we reclassified a loss of $0.9 million to interest expense and a tax benefit of $0.3 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss).

⁽³⁾  During the three months ended June 30, 2018, we recognized a gain of $0.9 million and a tax provision of $0.5 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments. During the six months ended June 30, 2018, we recognized a gain of $2.9 million and a tax provision of $0.9 million, in other comprehensive income (loss) related to the change in the fair value of derivative instruments.

⁽⁴⁾  During the three months ended June 30, 2018, we reclassified an immaterial loss to interest expense and an immaterial tax benefit to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). During the six months ended June 30, 2018, we reclassified a loss of $0.3 million to interest expense and a tax benefit of $0.1 million to provision for (benefit from) income taxes in our condensed consolidated statements of operations from accumulated other comprehensive income (loss). Additionally, during the six months ended June 30, 2018, we reclassified stranded tax effects resulting from the TCJA of $0.3 million to accumulated deficit in our condensed consolidated balance sheets. See Note 2(“Recent Accounting Developments”) for further detail.

⁽⁵⁾  Pursuant to the Merger, we reclassified a gain of $5.7 million from noncontrolling interest to accumulated other comprehensive income (loss) related to fair value of derivative instruments that was previously attributed to public ownership of the Partnership.

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Recent Accounting Developments (Tables)

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table summarizes the cumulative impact of the adoption of the Revenue Recognition Update on the opening balance sheet (in thousands):

	December 31, 2017			Adjustments Due to the Revenue Recognition Update			January 1, 2018
Assets
Accounts receivable, trade	$	113,416		$	7,883		$	121,299
Inventory	90,691			(6,917		)	83,774
Contract costs	—			21,524			21,524
Liabilities
Accrued liabilities	$	71,116		$	209		$	71,325
Deferred revenue	4,858			3,188			8,046
Deferred income taxes	97,943			4,427			102,370
Equity
Accumulated deficit	$	(2,241,243	)	$	14,666		$	(2,226,577	)

The following tables summarize the impact of the application of the Revenue Recognition Update on our condensed consolidated balance sheet and condensed consolidated statement of operations (in thousands):

	June 30, 2018
Balance Sheet	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Assets
Accounts receivable, trade	$	130,596		$	115,923		$	14,673
Inventory	82,470			97,463			(14,993		)
Contract costs	31,240			—			31,240
Liabilities
Accounts payable, trade	$	91,818		$	91,776		$	42
Accrued liabilities	67,152			66,930			222
Deferred revenue	8,859			7,037			1,822
Deferred income taxes	2,568			2,329			239
Other long-term liabilities	17,536			17,514			22
Equity
Additional paid-in capital (1)	$	3,150,118		$	3,140,754		$	9,364
Accumulated deficit	(2,252,349		)	(2,271,558		)	19,209

——————

⁽¹⁾  Represents the impact of the Revenue Recognition Update on net income attributable to noncontrolling interest which was reclassed to additional paid-in capital pursuant to the Merger.

	Three Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	165,450		$	166,341		$	(891	)
Aftermarket services	61,420			56,660			4,760
Total revenue	226,870			223,001			3,869
Cost of sales (excluding depreciation and amortization):
Contract operations	67,809			71,956			(4,147		)
Aftermarket services	50,793			47,103			3,690
Selling, general and administrative	26,649			27,025			(376		)
Benefit from income taxes	(1,567		)	(4,097		)	2,530
Less: Net income attributable to the noncontrolling interest	(2,212		)	(1,735		)	(477		)
Net income attributable to Archrock stockholders	1,937			242			1,695

	Six Months Ended June 30, 2018
Statement of Operations	As Reported			Balance Excluding the Impact of the Revenue Recognition Update			Effect of Change
Revenue:
Contract operations	$	326,647		$	329,325		$	(2,678	)
Aftermarket services	112,263			101,442			10,821
Total Revenue	438,910			430,767			8,143
Cost of sales (excluding depreciation and amortization):
Contract operations	132,404			141,150			(8,746		)
Aftermarket services	93,130			85,011			8,119
Selling, general and administrative	54,157			55,127			(970		)
Benefit from income taxes	(1,213		)	(4,454		)	3,241
Less: Net income attributable to the noncontrolling interest	(8,097		)	(6,141		)	(1,956		)
Net loss attributable to Archrock stockholders	(1,879		)	(6,422		)	4,543

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Revenue from Contract with Customers (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents our revenue from contracts with customers disaggregated by revenue source (in thousands):

	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
Contract Operations (1):
0 - 1000 horsepower per unit	$	59,600	$	119,192
1,001 - 1,500 horsepower per unit	68,948		135,178
Over 1,500 horsepower per unit	35,904		70,314
Other (2)	998		1,963
Total contract operations (3)	165,450		326,647
Aftermarket Services (1):
Services	36,706		68,913
OTC parts and components sales	24,714		43,350
Total aftermarket services (4)	61,420		112,263
Total revenue (5)	$	226,870	$	438,910

——————

⁽¹⁾  We operate in two segments: contract operations and aftermarket services. See Note 16(“Segments”) for further details regarding our segments.

⁽²⁾  Primarily relates to fees associated with Archrock-owned non-compressor equipment.

⁽³⁾  Includes $1.4 million and $2.7 million for the three and six months ended June 30, 2018, respectively, related to billable maintenance on Archrock-owned units that was recognized at a point in time. All other revenue within contract operations is recognized over time.

⁽⁴⁾  All service revenue within aftermarket services is recognized over time. All OTC parts and components sales revenue is recognized at a point in time.

Remaining Performance Obligation

The remaining performance obligations will be recognized through 2021 as follows (in thousands):

	2018		2019		2020		2021		Total
Contract operations remaining performance obligations	$	125,577	$	71,713	$	23,027	$	3,993	$	224,310

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Discontinued Operations (Tables)

6 Months Ended

Jun. 30, 2018

Discontinued Operations and Disposal Groups [Abstract]

Summary of operating results and balance sheet data for discontinued operations

The following table summarizes the balance sheet data for discontinued operations (in thousands):

	June 30, 2018		December 31, 2017
	Exterran Corporation		Exterran Corporation		Contract Water Treatment Business		Total
Other current assets	$	300	$	300	$	—	$	300
Total current assets associated with discontinued operations	300		300		—		300
Other assets, net	6,421		6,421		—		6,421
Deferred income taxes (1)	—		—		6,842		6,842
Total assets associated with discontinued operations	$	6,721	$	6,721	$	6,842	$	13,563
Other current liabilities	$	297	$	297	$	—	$	297
Total current liabilities associated with discontinued operations	297		297		—		297
Deferred income taxes	6,421		6,421		—		6,421
Total liabilities associated with discontinued operations	$	6,718	$	6,718	$	—	$	6,718

——————

⁽¹⁾  Reduced by $0.6 million for current period tax amortization and $6.2 million for a valuation allowance recorded as a result of the Merger, whereby we assessed the available positive and negative evidence and concluded, based on the weight of the evidence, that a valuation allowance was required on our resulting net deferred tax asset position, with an offsetting increase to additional paid-in capital in our condensed consolidated balance sheet as of June 30, 2018. See Note 1(“Organization and Summary of Significant Accounting Policies”) for further details of the Merger.

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Inventory (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of inventory, net of reserves

Inventory consisted of the following amounts (in thousands):

	June 30, 2018		December 31, 2017
Parts and supplies	$	67,092	$	72,528
Work in progress	15,378		18,163
Inventory	$	82,470	$	90,691

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Property, Plant and Equipment, Net (Tables)

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

Property, plant and equipment, net, consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Compression equipment, facilities and other fleet assets	$	3,261,824		$	3,192,363
Land and buildings	46,667			45,754
Transportation and shop equipment	101,867			100,133
Computer hardware and software	92,156			90,296
Other	11,674			12,419
Property, plant and equipment	3,514,188			3,440,965
Accumulated depreciation	(1,388,901		)	(1,364,038		)
Property, plant and equipment, net	$	2,125,287		$	2,076,927

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Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt consisted of the following (in thousands):

	June 30, 2018			December 31, 2017
Credit Facility	$	—		$	56,000
Partnership Credit Facility	770,500			674,306
Partnership’s 6% senior notes due April 2021	350,000			350,000
Less: Debt discount, net of amortization	(2,162		)	(2,523		)
Less: Deferred financing costs, net of amortization	(2,825		)	(3,338		)
	345,013			344,139
Partnership’s 6% senior notes due October 2022	350,000			350,000
Less: Debt discount, net of amortization	(3,108		)	(3,441		)
Less: Deferred financing costs, net of amortization	(3,542		)	(3,951		)
	343,350			342,608
Long-term debt	$	1,458,863		$	1,417,053

The Partnership must maintain the following consolidated financial ratios, as defined in the Partnership Credit Facility agreement:

EBITDA to Interest Expense	2.5 to 1.0
Senior Secured Debt to EBITDA	3.5 to 1.0
Total Debt to EBITDA
Through fiscal year 2018	5.95 to 1.0
Through fiscal year 2019	5.75 to 1.0
Through second quarter of 2020	5.50 to 1.0
Thereafter (1)	5.25 to 1.0

——————

⁽¹⁾  Subject to a temporary increase to 5.5 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the quarter in which the acquisition closes.

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of interest rate swaps

At June 30, 2018, the Partnership was a party to the following interest rate swaps, which were entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates:

Expiration Date	Notional Value (in millions)
May 2019	$	100.0
May 2020	100.0
March 2022	300.0
	$	500.0

Effect of derivative instruments on consolidated financial position

The following tables present the effect of derivative instruments designated as hedging instruments on our consolidated financial position and results of operations (in thousands):

	Fair Value Asset (Liability)
Balance Sheet Location	June 30, 2018		December 31, 2017
Other current assets	$	2,816	$	186
Other long-term assets	9,050		4,490
Accrued liabilities	—		(134		)
	$	11,866	$	4,542

Effect of derivative instruments on results of operations

	Pre-tax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives			Location of Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)
Derivatives designated as cash flow hedges:
Interest rate swaps
Three months ended June 30, 2018	$	2,245		Interest expense	$	(39	)
Three months ended June 30, 2017	(336		)	Interest expense	(830		)
Six months ended June 30, 2018	6,941			Interest expense	(513		)
Six months ended June 30, 2017	363			Interest expense	(1,843		)

	Location and Amount of Gain (Loss) Recognized in Income on Cash Flow Hedging Relationships
	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
	Interest Expense
Total amount of income and expense line items presented in the statement of operations in which the effects of cash flow hedges are recorded	$	23,337	$	45,884
Interest Contracts:
Amount of gain reclassified from accumulated other comprehensive income into income	$	207	$	153

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Summary of assets and liabilities measured at fair value on recurring basis

The following table presents our interest rate swaps asset and liability measured at fair value on a recurring basis with pricing levels as of the date of valuation (in thousands):

	June 30, 2018		December 31, 2017
Interest rate swaps asset	$	11,866	$	4,676
Interest rate swaps liability	—		(134		)

Schedule of carrying value and estimated fair value of debt instruments

The following table summarizes the carrying amount and fair value of our fixed rate debt (in thousands):

	June 30, 2018		December 31, 2017
Carrying amount of fixed rate debt (1)	$	688,363	$	686,747
Fair value of fixed rate debt	696,000		702,000

——————

⁽¹⁾  Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 8(“Long-Term Debt”) for further details.

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Long-Lived Assets Impairment (Tables)

6 Months Ended

Jun. 30, 2018

Asset Impairment Charges [Abstract]

Details of Impairment of Long-Lived Assets Held and Used by Asset

The following table presents the results of our impairment review as recorded in our contract operations segment (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Idle compressor units retired from the active fleet	120		60		165		140
Horsepower of idle compressor units retired from the active fleet	27,000		23,000		50,000		51,000
Impairment recorded on idle compressor units retired from the active fleet	$	6,953	$	5,508	$	11,663	$	13,753

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of stock option activity

The following table presents stock option activity during the six months ended June 30, 2018:

	Stock Options (in thousands)		Weighted Average Exercise Price Per Share		Weighted Average Remaining Life (in years)	Aggregate Intrinsic Value (in thousands)
Options outstanding, January 1, 2018	489		$	12.28
Exercised	(30	)	8.79
Canceled	(53	)	13.96
Options outstanding and exercisable, June 30, 2018	406		12.31		1.2	$	1,261

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

The following table presents restricted stock, restricted stock unit, performance unit, cash-settled restricted stock unit and cash- settled performance unit activity during the six months ended June 30, 2018:

	Shares (in thousands)		Weighted Average Grant Date Fair Value Per Share
Non-vested awards, January 1, 2018	1,440		$	10.39
Granted	1,098		9.52
Converted (1)	140		7.03
Vested	(503	)	9.56
Canceled	(47	)	11.33
Non-vested awards, June 30, 2018 (2)	2,128		9.89

——————

⁽¹⁾  Reflects conversion of Partnership phantom units into Archrock restricted stock units pursuant to the Merger See “Partnership Long-Term Incentive Plan” section below for detail regarding the conversion of awards.

⁽²⁾  Non-vested awards as of June 30, 2018 are comprised of 272,000 cash-settled restricted stock units and cash-settled performance units and 1,856,000 restricted shares and stock-settled performance units.

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Cash Dividends (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Summary of entity's dividends per common share

The following table summarizes our dividends per common share:

Declaration Date	Payment Date	Dividends per Common Share		Total Dividends (in thousands)
January 19, 2017	February 15, 2017	$	0.12	$	8,458
April 26, 2017	May 16, 2017	0.12		8,534
July 26, 2017	August 15, 2017	0.12		8,536
October 20, 2017	November 15, 2017	0.12		8,536
January 18, 2018	February 14, 2018	0.12		8,532
April 25, 2018	May 15, 2018	0.12		15,486

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Segments (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Revenue and other financial information by reportable segment

The following table presents revenue and other financial information by segment during the three and six months ended June 30, 2018 and 2017 (in thousands): 

	Contract Operations		Aftermarket Services		Total
Three months ended June 30, 2018
Revenue	$	165,450	$	61,420	$	226,870
Gross margin	97,641		10,627		108,268
Three months ended June 30, 2017
Revenue	$	151,114	$	46,868	$	197,982
Gross margin	88,871		7,259		96,130
Six months ended June 30, 2018
Revenue	$	326,647	$	112,263	$	438,910
Gross margin	194,243		19,133		213,376
Six months ended June 30, 2017
Revenue	$	301,098	$	86,769	$	387,867
Gross margin	174,758		13,428		188,186

Reconciliation of net income (loss) to gross margin

The following table reconciles total gross margin to income (loss) before income taxes (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Total gross margin	$	108,268		$	96,130		$	213,376		$	188,186
Less:
Selling, general and administrative	26,649			25,162			54,157			52,715
Depreciation and amortization	43,331			47,248			87,786			95,020
Long-lived asset impairment	6,953			5,508			11,663			13,753
Restatement and other charges	(1,076		)	1,920			(591		)	2,721
Restructuring and other charges	—			366			—			823
Interest expense	23,337			22,504			45,884			43,925
Debt extinguishment costs	2,450			—			2,450			291
Merger-related costs	5,686			—			9,811			—
Other income, net	(1,644		)	(962		)	(2,789		)	(1,756		)
Income (loss) before income taxes	$	2,582		$	(5,616	)	$	5,005		$	(19,306	)

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Organization and Summary of Significant Accounting Policies - Organization (Details)	6 Months Ended
	Jun. 30, 2018 segment
Accounting Policies [Abstract]
Number of reportable segments	2

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Organization and Summary of Significant Accounting Policies - Merger Transaction Narratives (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 26, 2018 USD ($) shares	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Business Acquisitions
Ownership percentage held by reporting entity	57.00%
Deferred tax asset, net		$ 57,200		$ 57,200
Deferred tax asset valuation allowance		55,300		55,300
Adjustments to additional paid in capital, deferred tax asset				101,200
Merger-related costs		$ 5,686	$ 0	$ 9,811	$ 0
Partnership Merger
Business Acquisitions
Deferred tax asset acquired	$ 156,500
Partnership Merger | Common Stock
Business Acquisitions
Business acquisition, shares issued (shares) | shares	57,600,000.0
Business acquisition, shares acquired (shares) | shares	41.2
Share conversion rate (per share)	1.40
Value of shares used as consideration	$ 625,300

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Organization and Summary of Significant Accounting Policies - Effects of Changes in Ownership Interest on Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Net income (loss) attributable to Archrock stockholders	$ 1,937	$ (6,687)	$ (1,879)	$ (18,372)
Decrease in Archrock stockholders’ additional paid-in capital for purchase of Partnership common units			52,815	0
Change from net loss attributable to Archrock stockholders and transfers from noncontrolling interest			$ 50,936	$ (18,372)

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Organization and Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Summary of net income attributable to Exterran common stockholders used in the calculation of basic and diluted income per common share
Net income (loss) attributable to Archrock stockholders	$ 1,937	$ (6,687)	$ (1,879)	$ (18,372)
Less: Net income attributable to participating securities	(157)	(180)	(313)	(334)
Net income (loss) attributable to Archrock common stockholders	$ 1,780	$ (6,867)	$ (2,192)	$ (18,706)
Potential shares of common stock included in computing diluted income attributable to Exterran common stockholders per common share
Weighted average common shares outstanding including participating securities (in shares)	112,995	70,908	92,130	70,833
Less: Weighted average participating securities outstanding (in shares)	(1,699)	(1,320)	(1,541)	(1,337)
Weighted average common shares outstanding — used in basic income (loss) per common share (in shares)	111,296	69,588	90,589	69,496
Net dilutive potential common shares issuable:
On exercise of options (in shares)	99
On the settlement of employee stock purchase plan shares (in shares)	7	0		0
Weighted average common shares outstanding - used in diluted income (loss) per common share (in shares)	111,402	69,588	90,589	69,496

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Organization and Summary of Significant Accounting Policies - Anti-dilutive Securities (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable
Net dilutive potential common shares issuable (shares)	187	390	299	422
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)	187	282	205	297
On exercise of options
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable
Net dilutive potential common shares issuable (shares)	0	108	89	125
On the settlement of employee stock purchase plan shares
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable
Net dilutive potential common shares issuable (shares)	0	0	5	0

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Organization and Summary of Significant Accounting Policies - Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Changes in accumulated other comprehensive income (loss) by component
Beginning balance		$ 735,618		$ 735,618	$ 684,928
Merger-related adjustments	$ 5,670		$ 0	5,670	0
Total other comprehensive income	7,475		419	12,182	1,859
Ending balance	830,725		679,854	830,725	679,854
Interest expense	23,337		22,504	45,884	43,925
Benefit from income taxes	1,567		1,580	1,213	1,257
Adjustments related to TCJA		(300)
Adjustments to other comprehensive income (loss)				5,700
Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss) by component
Beginning balance		1,197		1,197	(1,678)
Merger-related adjustments				5,670
Ending balance	9,374		(936)	9,374	(936)
Accumulated Other Comprehensive Income (Loss) | Reclassification adjustments
Changes in accumulated other comprehensive income (loss) by component
Interest expense	207			153
Derivatives Cash Flow Hedges
Changes in accumulated other comprehensive income (loss) by component
Beginning balance		$ 1,197		1,197	(1,678)
Gain recognized in other comprehensive loss, net of tax				2,051	173
Loss reclassified from accumulated other comprehensive loss, net of tax				456	569
Merger-related adjustments				5,670
Total other comprehensive income				8,177	742
Ending balance	9,374		(936)	9,374	(936)
Gain (loss) recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments before tax	900		(100)	2,900	200
Tax provision (benefit) of loss recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments	500		(100)	900
Adjustments related to TCJA				(300)
Derivatives Cash Flow Hedges | Reclassification adjustments | Interest rate swaps
Changes in accumulated other comprehensive income (loss) by component
Interest expense	0		400	300	900
Benefit from income taxes	$ 0		$ 100	$ 100	$ 300

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Recent Accounting Developments (Narratives) (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	Jan. 01, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle
Adjustments related to TCJA			$ (300)
Cumulative effect on other comprehensive income		$ 7,475		$ 419	$ 12,182	$ 1,859
ASU 2017-12
New Accounting Pronouncements or Change in Accounting Principle
Cumulative effect on retained earnings							$ 383
Cumulative effect on other comprehensive income	$ (400)

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Recent Accounting Developments - Balance Sheet Impact (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Assets
Accounts receivable, trade	$ 130,596	$ 121,299	$ 113,416
Inventory	82,470	83,774	90,691
Contract costs	31,240	21,524	0
Liabilities
Accounts payable, trade	91,818		54,585
Accrued liabilities	67,152	71,325	71,116
Deferred revenue	8,859	8,046	4,858
Deferred income taxes	2,568	102,370	97,943
Other long-term liabilities	17,536		20,116
Equity
Additional paid-in capital	3,150,118		3,093,058
Accumulated deficit	(2,252,349)	(2,226,577)	$ (2,241,243)
Calculated under Revenue Guidance in Effect before Topic 606
Assets
Accounts receivable, trade	115,923
Inventory	97,463
Contract costs	0
Liabilities
Accounts payable, trade	91,776
Accrued liabilities	66,930
Deferred revenue	7,037
Deferred income taxes	2,329
Other long-term liabilities	17,514
Equity
Additional paid-in capital	3,140,754
Accumulated deficit	(2,271,558)
Adjustments Due to the Revenue Recognition Update | ASU 2014-09
Assets
Accounts receivable, trade	14,673	7,883
Inventory	(14,993)	(6,917)
Contract costs	31,240	21,524
Liabilities
Accounts payable, trade	42
Accrued liabilities	222	209
Deferred revenue	1,822	3,188
Deferred income taxes	239	4,427
Other long-term liabilities	22
Equity
Additional paid-in capital	9,364
Accumulated deficit	$ 19,209	$ 14,666

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Recent Accounting Developments - Income Statement Impact (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue:
Revenues	$ 226,870	$ 197,982	$ 438,910	$ 387,867
Selling, general and administrative	26,649	25,162	54,157	52,715
Benefit from income taxes	(1,567)	(1,580)	(1,213)	(1,257)
Less: Net income attributable to the noncontrolling interest	(2,212)	(2,651)	(8,097)	(323)
Net income attributable to Archrock stockholders	1,937	(6,687)	(1,879)	(18,372)
Contract Operations | Contract operations
Revenue:
Revenues	165,450	151,114	326,647	301,098
Costs of sales (excluding depreciation and amortization expense)	67,809	62,243	132,404	126,340
Aftermarket Services | Aftermarket services
Revenue:
Revenues	61,420	46,868	112,263	86,769
Costs of sales (excluding depreciation and amortization expense)	50,793	$ 39,609	93,130	$ 73,341
Balance Excluding the Impact of the Revenue Recognition Update
Revenue:
Revenues	223,001		430,767
Selling, general and administrative	27,025		55,127
Benefit from income taxes	(4,097)		(4,454)
Less: Net income attributable to the noncontrolling interest	(1,735)		(6,141)
Net income attributable to Archrock stockholders	242		(6,422)
Balance Excluding the Impact of the Revenue Recognition Update | Contract Operations | Contract operations
Revenue:
Revenues	166,341		329,325
Costs of sales (excluding depreciation and amortization expense)	71,956		141,150
Balance Excluding the Impact of the Revenue Recognition Update | Aftermarket Services | Aftermarket services
Revenue:
Revenues	56,660		101,442
Costs of sales (excluding depreciation and amortization expense)	47,103		85,011
Effect of Change | ASU 2014-09
Revenue:
Revenues	3,869		8,143
Selling, general and administrative	(376)		(970)
Benefit from income taxes	2,530		3,241
Less: Net income attributable to the noncontrolling interest	(477)		(1,956)
Net income attributable to Archrock stockholders	1,695		4,543
Effect of Change | ASU 2014-09 | Contract Operations | Contract operations
Revenue:
Revenues	(891)		(2,678)
Costs of sales (excluding depreciation and amortization expense)	(4,147)		(8,746)
Effect of Change | ASU 2014-09 | Aftermarket Services | Aftermarket services
Revenue:
Revenues	4,760		10,821
Costs of sales (excluding depreciation and amortization expense)	$ 3,690		$ 8,119

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Revenue from Contract with Customers - Disaggregate Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue
Contract revenue	$ 226,870	$ 197,982	$ 438,910	$ 387,867
Contract Operations | Transferred at point in time
Disaggregation of Revenue
Contract revenue	1,400		2,700
Contract Operations | Contract operations
Disaggregation of Revenue
Contract revenue	165,450	151,114	326,647	301,098
Contract Operations | 0 - 1000 horsepower per unit
Disaggregation of Revenue
Contract revenue	59,600		119,192
Contract Operations | 1,001 - 1,500 horsepower per unit
Disaggregation of Revenue
Contract revenue	68,948		135,178
Contract Operations | Over 1,500 horsepower per unit
Disaggregation of Revenue
Contract revenue	35,904		70,314
Contract Operations | Other
Disaggregation of Revenue
Contract revenue	998		1,963
Aftermarket Services | Aftermarket services
Disaggregation of Revenue
Contract revenue	61,420	$ 46,868	112,263	$ 86,769
Aftermarket Services | Services
Disaggregation of Revenue
Contract revenue	36,706		68,913
Aftermarket Services | OTC parts and components sales
Disaggregation of Revenue
Contract revenue	$ 24,714		$ 43,350

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Revenue from Contract with Customers - Remaining Performance Obligation (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Revenue from Contract with Customer [Abstract]
Contract operations remaining performance obligations	$ 224,310
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue from Contract with Customer [Abstract]
Contract operations remaining performance obligations	$ 125,577
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Performance obligations expected to be satisfied, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue from Contract with Customer [Abstract]
Contract operations remaining performance obligations	$ 71,713
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue from Contract with Customer [Abstract]
Contract operations remaining performance obligations	$ 23,027
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue from Contract with Customer [Abstract]
Contract operations remaining performance obligations	$ 3,993
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Performance obligations expected to be satisfied, expected timing	1 year

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Revenue from Contract with Customers - Contract with Client (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Contract assets with customer	$ 124.1	$ 115.6
Contract liability with customer	9.5	$ 9.0
Increase in contract liability from freight billing	8.8
Revenue from contract liability	$ 8.3

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Discontinued Operations (Narratives) (Details) - USD ($) $ in Millions		6 Months Ended
	Apr. 11, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017
Discontinued Operations
Amortization of deferred tax asset		$ 0.6
Valuation allowance		6.2
Exterran Corporation
Discontinued Operations
Unrecognized tax benefits		6.4
Indemnification asset		6.4
Exterran Corporation | Spinoff
Discontinued Operations
Compression units acquired			$ 79.3
Exterran Corporation
Discontinued Operations
Proceeds from sale of expropriated assets installment payment			$ 19.7
Scheduled installment payments		$ 20.9
Due from affiliate				$ 25.0
Proceeds from affiliate	$ 25.0

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Discontinued Operations - Balance Sheet Data for Discontinued Operations (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Summary of balance sheet data for discontinued operations
Other current assets		$ 300
Total current assets associated with discontinued operations	$ 300	300
Other assets, net		6,421
Deferred income taxes		6,842
Total assets associated with discontinued operations		13,563
Other current liabilities		297
Total current liabilities associated with discontinued operations	297	297
Deferred income taxes		6,421
Total liabilities associated with discontinued operations		6,718
Spinoff | Exterran Corporation
Summary of balance sheet data for discontinued operations
Other current assets	300	300
Total current assets associated with discontinued operations	300	300
Other assets, net	6,421	6,421
Deferred income taxes	0	0
Total assets associated with discontinued operations	6,721	6,721
Other current liabilities	297	297
Total current liabilities associated with discontinued operations	297	297
Deferred income taxes	6,421	6,421
Total liabilities associated with discontinued operations	$ 6,718	6,718
Abandonment | Contract Water Treatment Business
Summary of balance sheet data for discontinued operations
Other current assets		0
Total current assets associated with discontinued operations		0
Other assets, net		0
Deferred income taxes		6,842
Total assets associated with discontinued operations		6,842
Other current liabilities		0
Total current liabilities associated with discontinued operations		0
Deferred income taxes		0
Total liabilities associated with discontinued operations		$ 0

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Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Composition of Inventory net of reserves
Parts and supplies	$ 67,092		$ 72,528
Work in progress	15,378		18,163
Inventory	$ 82,470	$ 83,774	$ 90,691

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Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment
Property, plant and equipment, gross	$ 3,514,188	$ 3,440,965
Accumulated depreciation	(1,388,901)	(1,364,038)
Property, plant and equipment, net	2,125,287	2,076,927
Compression equipment, facilities and other fleet assets
Property, Plant and Equipment
Property, plant and equipment, gross	3,261,824	3,192,363
Land and buildings
Property, Plant and Equipment
Property, plant and equipment, gross	46,667	45,754
Transportation and shop equipment
Property, Plant and Equipment
Property, plant and equipment, gross	101,867	100,133
Computer hardware and software
Property, Plant and Equipment
Property, plant and equipment, gross	92,156	90,296
Other
Property, Plant and Equipment
Property, plant and equipment, gross	$ 11,674	$ 12,419

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Contract Costs (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Disaggregation of Revenue
Contract costs	$ 31,240,000	$ 31,240,000		$ 21,524,000	$ 0
Capitalized contract, term		36 months
Amortization of contract costs		$ 6,281,000	$ 0
Impairment of contract costs	0	0
Sales Commissions
Disaggregation of Revenue
Contract costs	3,200,000	3,200,000		2,300,000
Amortization of contract costs	400,000	700,000
Freight and Mobilization
Disaggregation of Revenue
Contract costs	28,000,000	28,000,000		$ 19,200,000
Amortization of contract costs	$ 3,000,000	$ 5,600,000

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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument
Long-term debt	$ 1,458,863	$ 1,417,053
Partnership’s 6% senior notes due April 2021 | Senior Notes
Debt Instrument
Long term debt gross	350,000	350,000
Less: Debt discount, net of amortization	(2,162)	(2,523)
Less: Deferred financing costs, net of amortization	(2,825)	(3,338)
Long-term debt	$ 345,013	344,139
Interest rate (as a percent)	6.00%
Partnership’s 6% senior notes due October 2022 | Senior Notes
Debt Instrument
Long term debt gross	$ 350,000	350,000
Less: Debt discount, net of amortization	(3,108)	(3,441)
Less: Deferred financing costs, net of amortization	(3,542)	(3,951)
Long-term debt	343,350	342,608
Revolving Credit Facility | Credit Facility
Debt Instrument
Long-term debt	0	56,000
Revolving Credit Facility | Partnership Credit Facility
Debt Instrument
Long-term debt	$ 770,500	$ 674,306
Interest rate (as a percent)	3.20%

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Long-Term Debt - Archrock Credit Facility (Details) - USD ($)		3 Months Ended		6 Months Ended
	Apr. 26, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Line of Credit Facility
Repayments of long-term debt				$ 343,636,000	$ 970,000,000
Revolving Credit Facility
Line of Credit Facility
Commitment fee amount		$ 600,000	$ 500,000	1,100,000	900,000
Revolving Credit Facility | Partnership Credit Facility
Line of Credit Facility
Repayments of long-term debt	$ 63,200,000
Letter of credit outstanding	$ 15,400,000	$ 15,400,000.0		15,400,000.0
Debt extinguishment costs				2,500,000
Revolving Credit Facility | Credit Facility
Line of Credit Facility
Debt instrument weighted average interest rate (percent)						3.30%
Commitment fee amount			$ 200,000	$ 200,000	$ 300,000

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Long-Term Debt - The Partnership Asset-Based Revolving Credit Facility (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 26, 2018	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Dec. 31, 2017
Partnership’s 6% senior notes due April 2021 | Senior Notes
Line of Credit Facility
Interest rate (as a percent)			6.00%		6.00%
Revolving Credit Facility
Line of Credit Facility
Commitment fee amount			$ 600,000	$ 500,000	$ 1,100,000	$ 900,000
Revolving Credit Facility | Exterran Partners, L.P.
Line of Credit Facility
Undrawn capacity under revolving credit facility			464,100,000		464,100,000
Revolving Credit Facility | Exterran Partners, L.P. | Maximum
Line of Credit Facility
Undrawn capacity under revolving credit facility			$ 287,600,000		$ 287,600,000
Revolving Credit Facility | Partnership Credit Facility
Line of Credit Facility
Debt instrument, expiration period	5 years
Revolving credit facility borrowing capacity	$ 1,250,000,000						$ 1,100,000,000.0
Interest rate (as a percent)			3.20%		3.20%
Debt issuance cost		$ 14,900,000
Letter of credit outstanding	15,400,000		$ 15,400,000.0		$ 15,400,000.0
Loss on extinguishment of debt					$ (2,500,000)
Revolving Credit Facility | Former facility
Line of Credit Facility
Amortized deferred financing cost		600,000
Loss on extinguishment of debt		$ 300,000
Letter of Credit
Line of Credit Facility
Debt issuance cost	3,300,000
Letter of Credit | Partnership Credit Facility
Line of Credit Facility
Revolving credit facility borrowing capacity	$ 50,000,000						$ 25,000,000
Line of Credit
Line of Credit Facility
Debt instrument weighted average interest rate (percent)			5.50%		5.50%			4.80%

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Long-Term Debt - Debt Ratios (Details) - Exterran Partners, L.P. - Revolving Credit Facility	6 Months Ended		12 Months Ended		21 Months Ended
	Jun. 30, 2020	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 30, 2022
Line of Credit Facility
EBITDA to Interest Expense		2.5
Senior Secured Debt to EBITDA		3.5
Forecasted
Line of Credit Facility
Total Debt to EBITDA ratio	5.50		5.75	5.95	5.25
Forecasted | Conditional Event
Line of Credit Facility
Total Debt to EBITDA ratio					5.50

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Derivatives - Interest Rate Risk (Details) - Derivatives designated as hedging instruments - USD ($)	Jun. 30, 2018	Aug. 31, 2017
Interest rate swaps
Notional Disclosures
Notional amount of interest rate swaps	$ 500,000,000
May 2019
Notional Disclosures
Notional amount of interest rate swaps	100,000,000
May 2020
Notional Disclosures
Notional amount of interest rate swaps	100,000,000
March 2022
Notional Disclosures
Notional amount of interest rate swaps	$ 300,000,000	$ 300,000,000.0

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Derivatives - Interest Rate Risk (Narratives) (Details) - Derivatives designated as hedging instruments - USD ($)	Jun. 30, 2018	Aug. 31, 2017
Interest rate swaps
Derivatives
Weighted average effective fixed interest rate on interest rate swaps (as a percent)	1.80%
Deferred pre-tax losses to be reclassified during next 12 months	$ 2,800,000
Notional amount of interest rate swaps	500,000,000
March 2022
Derivatives
Notional amount of interest rate swaps	$ 300,000,000	$ 300,000,000.0
Derivative liability fair value		$ 700,000

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Derivatives - Effect of Derivative Instruments on Balance Sheet (Details) - Derivatives designated as hedging instruments - Interest rate swaps - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value Asset (Liability)
Total derivatives	$ 11,866	$ 4,542
Other current assets
Fair Value Asset (Liability)
Derivative assets	2,816	186
Other long-term assets
Fair Value Asset (Liability)
Derivative assets	9,050	4,490
Accrued liabilities
Fair Value Asset (Liability)
Derivative liabilities	$ 0	$ (134)

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Derivatives - Effect of Derivative Instruments on Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Effect of derivative instruments on results of operations
Pre-tax Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives	$ 2,245	$ (336)	$ 6,941	$ 363
Interest expense
Effect of derivative instruments on results of operations
Pre-tax Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	$ (39)	$ (830)	$ (513)	$ (1,843)

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Derivatives - Derivative Gain (Loss) Recognized in Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Effect of derivative instruments on results of operations
Interest expense	$ 23,337	$ 22,504	$ 45,884	$ 43,925
Accumulated Other Comprehensive Income (Loss) | Reclassification adjustments
Effect of derivative instruments on results of operations
Interest expense	$ 207		$ 153

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - Recurring basis - Level 2 - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair value measurement of assets and liabilities
Interest rate swaps asset	$ 11,866	$ 4,676
Interest rate swaps liability	$ 0	$ (134)

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Fair Value Measurements (Narratives) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Nonrecurring basis | Level 3
Valuation of our interest rate swaps and impaired assets
Impaired long-lived assets	$ 1.2	$ 2.6
Impaired long-lived assets
Valuation of our interest rate swaps and impaired assets
Weighted average disposal period of impaired assets	4 years

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Fair Value Measurements - Fair Value of Debt (Details) - Fixed rate debt - Level 2 - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt	$ 688,363	$ 686,747
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Total debt	$ 696,000	$ 702,000

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Long-Lived Asset Impairment (Details) - Idle compressor units hp in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) compressor_unit hp	Jun. 30, 2017 USD ($) compressor_unit hp	Jun. 30, 2018 USD ($) compressor_unit hp	Jun. 30, 2017 USD ($) compressor_unit hp
Impaired Long-Lived Assets Held and Used
Idle compressor units retired from the active fleet (compressors) | compressor_unit	120	60	165	140
Horsepower of idle compressor units retired from the active fleet (horsepower) | hp	27	23	50	51
Impairment recorded on idle compressor units retired from the active fleet | $	$ 6,953	$ 5,508	$ 11,663	$ 13,753

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Restructuring and Other Charges (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring and Other Charges
Restructuring and other charges	$ 0	$ 366	$ 0	$ 823
Spin-off
Restructuring and Other Charges
Restructuring and other charges		$ 400		$ 800

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Stock-Based Compensation - Stock Incentive Plan (Narratives) (Details) - 2013 Plan	Apr. 30, 2013 shares
Stock-Based Compensation
Maximum number of shares available under the Plan	10,100,000
Stock options
Stock-Based Compensation
Number of shares counted by each award	1
Stock-settled award other than an option, stock appreciation right or award for which the recipient pays intrinsic value
Stock-Based Compensation
Number of shares counted by each award	1.75

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Stock-Based Compensation - Stock Option Activity (Narratives) (Details) - Stock options $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Stock-Based Compensation
Intrinsic value of options exercised	$ 0.1
First anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Second anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Third anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Vesting period	3 years
Maximum
Stock-Based Compensation
Expiration period	7 years

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Stock-Based Compensation - Stock Options Activity (Details) - Stock options $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Stock Options
Options outstanding at the beginning of the period (in shares) | shares	489
Exercised (in shares) | shares	(30)
Cancelled (in shares) | shares	(53)
Options outstanding at the end of the period (in shares) | shares	406
Options exercisable at the end of the period (in shares) | shares	406
Weighted Average Exercise Price Per Share
Options outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 12.28
Exercised (in dollars per share) | $ / shares	8.79
Cancelled (in dollars per share) | $ / shares	13.96
Options outstanding at end of period, (in dollars per share) | $ / shares	12.31
Options exercisable at the end of period (in dollars per share) | $ / shares	$ 12.31
Weighted Average Remaining Life
Outstanding at the end of the period	1 year 2 months 12 days
Exercisable at the end of the period	1 year 2 months
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars) | $	$ 1,261
Exercisable at the end of the period (in dollars) | $	$ 1,261

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Stock-Based Compensation - Restricted Stock, Restricted Stock Units, and Performance Units Activity (Details) - Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units shares in Thousands	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Shares
Non-vested awards at the beginning of the period (in shares) | shares	1,440
Granted (in shares) | shares	1,098
Converted (in shares) | shares	140
Vested (in shares) | shares	(503)
Canceled (in shares) | shares	(47)
Non-vested awards at the end of the period (in shares) | shares	2,128
Weighted Average Grant Date Fair Value Per Share
Non-vested awards at the beginning of the period (in dollars per share) | $ / shares	$ 10.39
Granted (in dollars per share) | $ / shares	9.52
Converted (in dollars per share) | $ / shares	7.03
Vested (in dollars per share) | $ / shares	9.56
Canceled (in dollars per share) | $ / shares	11.33
Non-vested awards at the end of the period (in dollars per share) | $ / shares	$ 9.89

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Stock-Based Compensation - Restricted Stock, Restricted Stock Units, and Performance Units Activity (Narratives) (Details) - USD ($) shares in Thousands, $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Cash settled restricted stock units and cash settled performance units
Stock-Based Compensation
Non-vested awards at the end of the period (in shares)	272
Restricted stock shares, restricted stock units and performance units
Stock-Based Compensation
Non-vested awards at the end of the period (in shares)	1,856
Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units
Stock-Based Compensation
Non-vested awards at the end of the period (in shares)	2,128	1,440
Unrecognized compensation
Expected unrecognized compensation cost related to unvested awards (in dollars)	$ 16.4
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized	2 years 6 months
Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units | First anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units | Second anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Restricted stock, restricted stock units, performance units, cash settled restricted stock units and cash settled performance units | Third anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Vesting period	3 years

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Stock-Based Compensation - Partnership Long Term Incentive Plan and Phantom Unit Activity (Narratives) (Details)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Partnership Phantom Units | First anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Partnership Phantom Units | Second anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Partnership Phantom Units | Third anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Restricted stock units
Stock-Based Compensation
Vested (in shares) | shares	503,000
Vested (in dollars per share) | $ / shares	$ 9.56
Restricted stock units | First anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Restricted stock units | Second anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Restricted stock units | Third anniversary vesting
Stock-Based Compensation
Vesting percentage	33.33%
Partnership Long Term Incentive Plan | Partnership Phantom Units
Stock-Based Compensation
Vested (in shares) | shares	53,091
Vested (in dollars per share) | $ / shares	$ 11.24

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Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended		6 Months Ended
	May 15, 2018	Feb. 14, 2018	Nov. 15, 2017	Aug. 15, 2017	May 16, 2017	Feb. 15, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Distributions
Dividends per Common Share (in dollars per share)	$ 0.1200	$ 0.12	$ 0.12	$ 0.1200	$ 0.12	$ 0.1200	$ 0.12	$ 0.1200	$ 0.24	$ 0.24
Total Dividends	$ 15,486	$ 8,532	$ 8,536	$ 8,536	$ 8,534	$ 8,458			$ 24,018	$ 16,992

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Cash Dividends (Narratives) (Details)	Jul. 25, 2018 $ / shares
Subsequent Event
Distributions
Dividend declared per common stock (in dollars per share)	$ 0.132

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Commitments and Contingencies - Guarantees Not Recorded on Balance Sheet (Details) $ in Millions	Jun. 30, 2018 USD ($)
Performance bonds
Commitments and contingencies
Maximum potential undiscounted payments	$ 2.3

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Commitments and Contingencies (Narratives) (Details) $ in Millions	6 Months Ended	78 Months Ended
	Jun. 30, 2018 USD ($) claim	Jun. 30, 2018 USD ($) claim	Dec. 31, 2017 USD ($) petition	Dec. 31, 2016 petition	Sep. 19, 2016 claim	Dec. 31, 2015 petition	Dec. 31, 2014 petition	Dec. 31, 2013 petition	Dec. 31, 2012 petition
Loss contingency
Accrued liability for the outcomes of non-income based tax audits | $	$ 2.5	$ 2.5	$ 1.7
Indemnification liability | $	1.6	1.6	$ 1.6
Litigation and Claims
Ad valorem tax benefit | $	9.5	87.7
Ad valorem tax benefit agreed to by a number of appraisal review boards and county appraisal districts | $	21.4	21.4
Ad valorem tax benefit in litigation | $	$ 66.3	$ 66.3
Number of petitions | petition			113	113		120	115	109	176
Number of cases appealed | claim	3	3
Loss Contingencies [Line Items]
Number of pending cases | claim	5	5
Number of cases settled | claim	3
Similar Judge
Loss Contingencies [Line Items]
Number of cases settled | claim	2
United ISD
Loss Contingencies [Line Items]
Number of pending cases | claim	4	4			5

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Segments (Narratives) (Details)	6 Months Ended
	Jun. 30, 2018 segment
Segment Reporting [Abstract]
Number of reportable segments	2

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Segments - Revenue and Gross Margin by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue and other financial information by reportable segment
Revenues	$ 226,870	$ 197,982	$ 438,910	$ 387,867
Total gross margin	108,268	96,130	213,376	188,186
Contract Operations
Revenue and other financial information by reportable segment
Total gross margin	97,641	88,871	194,243	174,758
Contract Operations | Contract operations
Revenue and other financial information by reportable segment
Revenues	165,450	151,114	326,647	301,098
Aftermarket Services
Revenue and other financial information by reportable segment
Total gross margin	10,627	7,259	19,133	13,428
Aftermarket Services | Aftermarket services
Revenue and other financial information by reportable segment
Revenues	$ 61,420	$ 46,868	$ 112,263	$ 86,769

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Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reconciliation Net Income (Loss) to Gross Margin
Total gross margin	$ 108,268	$ 96,130	$ 213,376	$ 188,186
Less:
Selling, general and administrative	26,649	25,162	54,157	52,715
Depreciation and amortization	43,331	47,248	87,786	95,020
Long-lived asset impairment	6,953	5,508	11,663	13,753
Restatement and other charges	(1,076)	1,920	(591)	2,721
Restructuring and other charges	0	366	0	823
Interest expense	23,337	22,504	45,884	43,925
Debt extinguishment costs	2,450	0	2,450	291
Merger-related costs	5,686	0	9,811	0
Other income, net	(1,644)	(962)	(2,789)	(1,756)
Income (loss) before income taxes	$ 2,582	$ (5,616)	$ 5,005	$ (19,306)