10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended June 30, 2019

OR

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

For the transition period from  to

Commission File No. 001-33078

Archrock Partners, L.P.

(Exact name of registrant as specified in its charter)

Delaware	22-3935108
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

9807 Katy Freeway, Suite 100, Houston, Texas 77024

(Address of principal executive offices, zip code)

(281) 836-8000

(Registrant’s telephone number, including area code)

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

Title of each class	Trading Symbol	Name of exchange on which registered
None	N/A	N/A

Archrock Partners, L.P. meets the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is therefore filing this Form 10-Q with the reduced disclosure format.

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

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

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

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

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

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

At July 29, 2019, the registrant’s common equity consisted of 70,231,036 common units, all of which were held indirectly by Archrock, Inc.

TABLE OF CONTENTS

	Page
GLOSSARY	3
FORWARD-LOOKING STATEMENTS	4
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (unaudited)	6
Condensed Consolidated Balance Sheets	6
Condensed Consolidated Statements of Operations	7
Condensed Consolidated Statements of Comprehensive Income	8
Condensed Consolidated Statements of Partners’ Capital	9
Condensed Consolidated Statements of Cash Flows	11
Notes to Unaudited Condensed Consolidated Financial Statements	12
Item 2. Management’s Narrative Analysis of Results of Operations	22
Item 3. Quantitative and Qualitative Disclosures About Market Risk	23
Item 4. Controls and Procedures	23
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	25
Item 1A. Risk Factors	25
Item 2. Unregistered Sales of Equity Securities	26
Item 3. Defaults Upon Senior Securities	26
Item 4. Mine Safety Disclosures	26
Item 5. Other Information	26
Item 6. Exhibits	27
SIGNATURES	28

2

GLOSSARY

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

2018 Form 10-K	Archrock Partners, L.P.’s Annual Report on Form 10-K for the year ended December 31, 2018
2021 Notes	$350.0 million of 6% senior notes due April 2021, issued in March 2013
2022 Notes	$350.0 million of 6% senior notes due October 2022, issued in April 2014
2027 Notes	$500.0 million of 6.875% senior notes due April 2027, issued in March 2019
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 Credit Facility
Archrock	Prior to the Merger: Archrock, Inc., individually and together with its wholly-owned subsidiaries Subsequent to the Merger: Archrock, Inc., individually and together with its wholly-owned subsidiaries, excluding the Partnership
ASC 606 Revenue	Accounting Standards Codification Topic 606 Revenue from Contracts with Customers
ASC 842 Leases	Accounting Standards Codification Topic 842 Leases
ASU 2016-13	Accounting Standards Update No. 2016-13 Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments
ASU 2017-12	Accounting Standards Update No. 2017-12 Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities
ASU 2018-13	Accounting Standards Update No. 2018-13 Fair Value Measurement (Topic 820) — Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement
Credit Facility	$1.25 billion asset-based revolving credit facility due March 2022, as amended by Amendment No. 1
EBITDA	Earnings before interest, taxes, depreciation and amortization
Elite Acquisition	Transaction expected to close in the third quarter of 2019 pursuant to the Asset Purchase Agreement entered into by Archrock and Elite Compression on June 23, 2019
Elite Compression	Elite Compression Services, LLC
Exchange Act	Securities Exchange Act of 1934, as amended
FASB	Financial Accounting Standards Board
Financial Statements	Condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q
GAAP	U.S. generally accepted accounting principles
General Partner	Archrock General Partner, L.P., the Partnership’s general partner, and an indirect, wholly-owned subsidiary of Archrock
Harvest	Harvest Four Corners, LLC
Harvest Sale	Transaction expected to close in the third quarter of 2019 pursuant to the Asset Purchase Agreement entered into by Archrock and Harvest on June 23, 2019
Hilcorp	Hilcorp Energy Company
Merger	Transaction completed on April 26, 2018 in which Archrock acquired all of the Partnership’s outstanding common units not already owned by Archrock pursuant to the 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
Omnibus Agreement	Partnership’s Fifth Amended and Restated Omnibus Agreement with certain Archrock entities, dated as of April 26, 2018, which governs various services and transactions that may occur between the Partnership and Archrock
Partnership, we, our, us	Archrock Partners, L.P., together with its subsidiaries
Revolving Loan Agreement	Agreement dated April 26, 2018 among the Partnership and Archrock under which the Partnership may make loans to Archrock
ROU	Right-of-use, as related to the new lease model under ASC 842 Leases
SEC	U.S. Securities and Exchange Commission
Securities Act	Securities Act of 1933, as amended
SG&A	Selling, general and administrative
U.S.	United States of America

3

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains “forward-looking statements.” All statements other than statements of historical fact contained in this Quarterly Report on Form 10-Q are forward-looking statements including, without limitation, statements regarding the effects of the Merger; the Partnership’s business growth strategy and projected costs; future financial position; the sufficiency of available cash flows to fund continuing operations and make cash distributions; anticipated cost savings; future revenue and other financial or operational measures related to our business; the future value of our equipment; and plans and objectives of our management for our future operations. You can identify many of these statements by words such as “believe,” “expect,” “intend,” “project,” “anticipate,” “estimate,” “will continue” or similar words or the negative thereof.

Such forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from those anticipated as of the date of this Quarterly Report on Form 10-Q. Although we believe that the expectations reflected in these forward-looking statements are based on reasonable assumptions, no assurance can be given that these expectations will prove to be correct. Known material factors that could cause our actual results to differ materially from the expectations reflected in these forward-looking statements include the risk factors described in our 2018 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;

• conditions in the oil and natural gas industry, including the level of production of, demand for or price of oil or natural gas;

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

• our dependence on Archrock to provide personnel and services, including its ability to hire, train and retain key employees and to cost-effectively perform the services necessary to conduct our business;

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

• the financial condition of our customers;

• 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; and

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

4

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.

5

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except unit amounts)

(unaudited)

	June 30, 2019			December 31, 2018
Assets
Current assets:
Cash	$	229		$	264
Accounts receivable, trade, net of allowance of $1,064 and $1,253, respectively	84,003			80,606
Tax refund receivable	—			14,000
Derivative asset	336			3,185
Other current assets	81			123
Total current assets	84,649			98,178
Property, plant and equipment	3,106,909			2,933,568
Accumulated depreciation	(1,084,111		)	(1,042,182		)
Property, plant and equipment, net	2,022,798			1,891,386
Intangible assets, net	38,903			45,839
Contract costs, net	35,901			32,220
Loan receivable due from Archrock	9,500			20,000
Other assets	11,585			17,801
Total assets	$	2,203,336		$	2,105,424
Liabilities and Partners’ Capital
Current liabilities:
Accounts payable, trade	$	10,158		$	10,646
Accrued liabilities	11,968			10,129
Deferred revenue	9,036			9,577
Accrued interest	17,249			11,999
Due to Archrock, net	1,132			17,251
Total current liabilities	49,543			59,602
Long-term debt	1,628,814			1,529,501
Other liabilities	11,837			9,175
Total liabilities	1,690,194			1,598,278
Commitments and contingencies (Note 11)
Partners’ capital:
Common units: 70,231,036 issued and outstanding	502,504			488,209
General partner units: 1,422,458 issued and outstanding	11,876			11,630
Accumulated other comprehensive income (loss)	(1,238		)	7,307
Total partners’ capital	513,142			507,146
Total liabilities and partners’ capital	$	2,203,336		$	2,105,424

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

6

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands)

(unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Revenue	$	169,384		$	150,866		$	335,103		$	297,868
Cost of sales (excluding depreciation and amortization)	64,343			60,226			132,067			116,528
Selling, general and administrative	21,502			19,344			42,609			39,145
Depreciation and amortization	36,439			33,898			71,815			68,224
Long-lived asset impairment	3,621			3,846			6,305			6,912
Interest expense, net	25,720			22,542			49,148			44,151
Debt extinguishment loss	3,653			—			3,653			—
Transaction-related costs	2,292			1,340			2,292			2,716
Other income, net	(1,413		)	(394		)	(861		)	(681		)
Income before income taxes	13,227			10,064			28,075			20,873
Provision for (benefit from) income taxes	586			(417		)	1,115			102
Net income	$	12,641		$	10,481		$	26,960		$	20,771

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

7

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(unaudited)

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Net income	$	12,641		$	10,481	$	26,960		$	20,771
Other comprehensive income (loss):
Interest rate swap gain (loss), net of reclassifications to earnings	(5,320		)	2,178		(8,545		)	7,163
Amortization of terminated interest rate swaps	—			61		—			227
Total other comprehensive income (loss)	(5,320		)	2,239		(8,545		)	7,390
Comprehensive income	$	7,321		$	12,720	$	18,415		$	28,161

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

8

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL

(in thousands, except unit and per unit amounts)

(unaudited)

	Partners’ Capital									Treasury Units					Accumulated Other Comprehensive Income (Loss)
	Common Units					General Partner Units
	Amount			Units		Amount			Units	Amount			Units					Total
Balance at April 1, 2018	$	506,035		70,363,681		$	11,650		1,422,458	$	(2,591	)	(132,645	)	$	9,627		$	524,721
Distribution of capital, net	(321		)															(321		)
Cash distributions ($0.221 per common unit)	(15,521		)			(315		)										(15,836		)
Merger-related adjustments	(2,591		)	(132,645	)					2,591			132,645					—
Comprehensive income
Net income	10,273					208												10,481
Interest rate swap gain, net of reclassifications to earnings															2,178			2,178
Amortization of terminated interest rate swaps															61			61
Balance at June 30, 2018	$	497,875		70,231,036		$	11,543		1,422,458	$	—		—		$	11,866		$	521,284
Balance at April 1, 2019	$	506,032		70,231,036		$	11,933		1,422,458	$	—		—		$	4,082		$	522,047
Distribution of capital, net	(1,488		)			(54		)										(1,542		)
Contribution of capital - excess of fair market value of equipment sold to Archrock over equipment purchased from Archrock	2,427					86												2,513
Cash distributions ($0.240 per common unit)	(16,856		)			(341		)										(17,197		)
Comprehensive income
Net income	12,389					252												12,641
Interest rate swap loss, net of reclassifications to earnings															(5,320		)	(5,320		)
Balance at June 30, 2019	$	502,504		70,231,036		$	11,876		1,422,458	$	—		—		$	(1,238	)	$	513,142

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

9

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL

(in thousands, except unit and per unit amounts)

(unaudited)

	Partners’ Capital									Treasury Units					Accumulated Other Comprehensive Income (Loss)
	Common Units					General Partner Units
	Amount			Units		Amount			Units	Amount			Units					Total
Balance at January 1, 2018	$	501,023		70,310,590		$	11,582		1,421,768	$	(2,341	)	(113,609	)	$	4,476		$	514,740
Issuance of common units for vesting of phantom units				53,091
Treasury units purchased										(250		)	(19,036	)				(250		)
Issuance of general partner units						9			690									9
Contribution of capital, net	1,504																	1,504
Cash distributions ($0.506 per common unit)	(35,571		)			(720		)										(36,291		)
Unit-based compensation expense	314																	314
Impact of adoption of ASC 606 Revenue	12,462					252												12,714
Impact of adoption of ASU 2017-12	375					8												383
Merger-related adjustments	(2,591		)	(132,645	)					2,591			132,645					—
Comprehensive income
Net income	20,359					412												20,771
Interest rate swap gain, net of reclassifications to earnings															7,163			7,163
Amortization of terminated interest rate swaps															227			227
Balance at June 30, 2018	$	497,875		70,231,036		$	11,543		1,422,458	$	—		—		$	11,866		$	521,284
Balance at January 1, 2019	$	488,209		70,231,036		$	11,630		1,422,458	$	—		—		$	7,307		$	507,146
Distribution of capital, net	(3,268		)			(110		)										(3,378		)
Contribution of capital - excess of fair market value of equipment sold to Archrock over equipment purchased from Archrock	4,267					86												4,353
Cash distributions ($0.480 per common unit)	(33,711		)			(683		)										(34,394		)
Cash contributions from Archrock	20,583					417												21,000
Comprehensive income
Net income	26,424					536												26,960
Interest rate swap loss, net of reclassifications to earnings															(8,545		)	(8,545		)
Balance at June 30, 2019	$	502,504		70,231,036		$	11,876		1,422,458	$	—		—		$	(1,238	)	$	513,142

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

10

ARCHROCK PARTNERS, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Six Months Ended June 30,
	2019			2018
Cash flows from operating activities:
Net income	$	26,960		$	20,771
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	71,815			68,224
Long-lived asset impairment	6,305			6,912
Amortization of deferred financing costs	3,041			2,862
Amortization of debt discount	545			694
Amortization of terminated interest rate swaps	—			227
Debt extinguishment loss	3,653			—
Interest rate swaps	(802		)	327
Unit-based compensation expense	—			314
Provision for (benefit from) doubtful accounts	(15		)	549
Gain on sale of property, plant and equipment	(527		)	(618		)
Deferred income tax provision (benefit)	892			(140		)
Amortization of contract costs	8,834			4,758
Deferred revenue recognized in earnings	(9,385		)	(5,403		)
Changes in assets and liabilities:
Accounts and other receivables	4,746			(2,477		)
Contract costs, net	(12,515		)	(13,102		)
Deferred revenue	9,039			8,118
Other assets and liabilities	7,131			1,707
Net cash provided by operating activities	119,717			93,723
Cash flows from investing activities:
Capital expenditures	(219,910		)	(115,510		)
Proceeds from sale of property, plant and equipment	18,760			13,719
Proceeds from insurance and other settlements	676			252
Loans receivable from Archrock, net	10,500			(60,500		)
Net cash used in investing activities	(189,974		)	(162,039		)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	1,254,000			272,830
Repayments of long-term debt	(1,151,000		)	(176,636		)
Payments for debt issuance costs	(8,829		)	(3,332		)
(Payments for) proceeds from settlement of interest rate swaps that include financing elements	800			(207		)
Distributions paid to unitholders	(34,394		)	(36,291		)
Contributions from Archrock	21,000			—
Net proceeds from issuance of general partner units	—			9
Purchases of treasury units	—			(250		)
Increase (decrease) in amounts due to Archrock, net	(11,355		)	4,166
Net cash provided by financing activities	70,222			60,289
Net decrease in cash	(35		)	(8,027		)
Cash, beginning of period	264			8,078
Cash, end of period	$	229		$	51
Supplemental disclosure of non-cash investing and financing transactions:
Contribution of capital for equipment overhauls and swaps	$	2,178		$	1,504
Distribution of capital for net book value difference of intercompany equipment sales	(5,556		)	—
Contribution of capital for net excess of fair market value of intercompany equipment sales	4,353			—

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

11

ARCHROCK PARTNERS, L.P.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. Organization and Basis of Presentation

We are a leading provider of natural gas compression services to customers in the oil and natural gas industry throughout the U.S. Our contract operations services primarily include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining natural gas compression equipment to provide natural gas compression services to our customers.

In April 2018, Archrock completed the acquisition of all of our outstanding common units that it did not already own and, as a result, we became its wholly-owned subsidiary. See Note 10 (“Partners’ Capital”) for further details of the Merger.

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with GAAP and the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP are not required in these interim financial statements and have been condensed or omitted. Management believes that the information furnished 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 2018 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.

Omission of Information by Certain Wholly-Owned Subsidiaries

We meet the conditions specified in General Instruction H(1)(a) and (b) of Form 10-Q and are thereby permitted to use the reduced disclosure format for wholly-owned subsidiaries of reporting companies specified therein. Accordingly, we have omitted from this report the information called for by Part I Item 3 “Quantitative and Qualitative Disclosures About Market Risk,” Part II Item 2 “Unregistered Sales of Equity Securities” and Part II Item 3 “Defaults Upon Senior Securities.” In addition, in lieu of the information called for by Part I Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” we have included, under Item 2, “Management’s Narrative Analysis of Results of Operations” to explain the reasons for material changes in the amount of revenue and expense items in the year-to-date periods reported herein.

Recent Business Developments

Elite Acquisition

On June 23, 2019, Archrock entered into an asset purchase agreement with Elite Compression pursuant to which Archrock will acquire from Elite Compression substantially all of its assets, including a fleet of predominantly-large compressor units comprising approximately 430,000 horsepower, a fleet of vehicles, real personal property and parts inventory, and certain liabilities for aggregate consideration of $205.0 million cash and 21,656,683 newly-issued shares of Archrock common stock. The cash portion of the purchase price will be funded with borrowings on our Credit Facility. The Elite Acquisition is expected to close in the third quarter of 2019 subject to certain closing conditions and the consummation of the Harvest Sale (see below). As a result of this transaction, we expect to own the purchased fleet of compressor units and the units’ associated customer contracts.

Harvest Sale

On June 23, 2019, Archrock entered into an asset purchase agreement with Harvest pursuant to which Harvest will acquire from Archrock approximately 80,000 active and idle compression horsepower, vehicles and parts inventory for consideration of $30 million to be paid in cash. All of the compression horsepower to be sold to Harvest is owned by us. The Harvest Sale is expected to close in the third quarter of 2019, subject to customary closing conditions.

During the three and six months ended June 30, 2019, we incurred transaction costs of $2.3 million related to the Elite Acquisition and Harvest Sale, which is reflected in transaction-related costs in our condensed consolidated statements of operations.

12

2. Recent Accounting Developments

Accounting Standards Updates Implemented

Leases

ASC 842 Leases establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet. Leases are 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. We are a party to leases in our contract operations services agreements. We adopted ASC 842 Leases on January 1, 2019, and have determined that ASC 842 Leases will not have an impact on our condensed consolidated financial statements.

ASC 842 Leases provides several practical expedients, one of which is for lessors to not separate lease and nonlease components and instead account for those components as a single component if certain conditions are met. ASC 842 Leases also provides clarification for lessors on whether ASC 842 Leases or ASC 606 Revenue is applicable to the combined component based on determination of the predominant component. We have concluded that for our contract operations services agreements, in which we are a lessor, the services nonlease component is predominant over the compression unit lease component and therefore ongoing recognition of these agreements will continue to follow the ASC 606 Revenue guidance.

Accounting Standards Updates Not Yet Implemented

In August 2018, the FASB issued ASU 2018-13 which amends the required fair value measurements disclosures related to valuation techniques and inputs used, uncertainty in measurement and changes in measurements applied. These amendments are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. We are currently evaluating the impact of ASU 2018-13 on our consolidated financial statements and footnote disclosures.

In June 2016, the FASB issued ASU 2016-13 which 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 earlier recognition of allowance for losses. For public entities that meet the definition of an SEC filer, 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 and footnote disclosures.

3. Related Party Transactions

Revolving Loan Agreement with Archrock

In conjunction with the closing of the Merger, we and Archrock entered into the Revolving Loan Agreement under which we may make loans to Archrock from time to time in an aggregate amount not to exceed the Credit Facility’s outstanding balance. The Revolving Loan Agreement matures on the maturity date of our Credit Facility. Interest on amounts loaned under the Revolving Loan Agreement is payable to us on a monthly basis and is calculated as a proportion of our total interest expense on the Credit Facility.

At June 30, 2019, the balance of outstanding borrowings under the Revolving Loan Agreement was $9.5 million. We recorded interest income earned on loans to Archrock under the Revolving Loan Agreement, which was included in interest expense, net in our condensed consolidated statements of operations, of $0.2 million and $0.6 million during the three months ended June 30, 2019 and 2018, respectively, and $0.3 million and $0.6 million during the six months ended June 30, 2019 and 2018, respectively.

Common Control Transactions

Transactions between us and Archrock and its affiliates are transactions between entities under common control. Under GAAP, transfers of assets and liabilities between entities under common control are to be initially recorded on the books of the receiving entity at the carrying value of the transferor. Any difference between consideration given and the carrying value of the assets or liabilities received is treated as a capital distribution or contribution.

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Sales of Compression Equipment with Archrock

If Archrock determines in good faith that we or Archrock’s contract operations services business needs to sell compression equipment between Archrock and us, the Omnibus Agreement permits such transactions if it will not cause us to breach any existing contracts, suffer a loss of revenue under any existing contract operations services contracts or incur any unreimbursed costs. As consideration for the sale of compression equipment, the transferee will make a distribution to or receive a contribution from the transferor in an amount equal to the net book value of the compression equipment sold.

The following table summarizes compressor unit sales activity between Archrock and us (dollars in thousands):

	Three Months Ended June 30, 2019				Six Months Ended June 30, 2019
	Sold to Archrock		Purchased from Archrock		Sold to Archrock		Purchased from Archrock
Compressor units	24		29		35		59
Horsepower	7,860		10,030		16,301		20,119
Net book value	$	7,342	$	4,653	$	14,335	$	8,779

During the three and six months ended June 30, 2019, we recorded capital distributions of $2.7 million and $5.6 million, respectively, related to the difference in net book value of the compression equipment sold to and acquired from Archrock. In addition, in accordance with the Omnibus Agreement, we recorded capital contributions of $2.5 million and $4.4 million during the three and six months ended June 30, 2019, respectively, which represented the net excess of the fair market value of the equipment sold to Archrock over the equipment purchased from Archrock. No customer contracts were included in these sales.

Sales of Overhauls

During the three months ended June 30, 2019 and 2018, Archrock contributed to us $1.1 million and we distributed to Archrock $0.2 million, respectively, related to the completion of overhauls on compression equipment that was sold to us and where the overhauls were in progress on the date of the sale. Archrock contributed to us $2.2 million and $1.7 million related to the completion of such overhauls during the six months ended June 30, 2019 and 2018, respectively.

Reimbursement of Operating and SG&A Expense

Archrock provides all operational staff, corporate staff and support services reasonably necessary to run our business. These services may include, without limitation, operations, marketing, maintenance and repair, periodic overhauls of compression equipment, inventory management, legal, accounting, treasury, insurance administration and claims processing, risk management, health, safety and environmental, information technology, human resources, credit, payroll, internal audit, taxes, facilities management, investor relations, enterprise resource planning system, training, executive, sales, business development and engineering.

Archrock charges us for costs that are directly attributable to us. Costs that are indirectly attributable to us and Archrock’s other operations are allocated among Archrock’s other operations and us. The allocation methodologies vary based on the nature of the charge and have included, among other things, headcount and horsepower. We believe that the allocation methodologies used to allocate indirect costs to us are reasonable.

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4. Long-Term Debt

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

	June 30, 2019			December 31, 2018
Credit Facility	$	792,500		$	839,500
2027 Notes	500,000			—
Less: Deferred financing costs, net of amortization	(8,550		)	—
	491,450			—
2022 Notes	350,000			350,000
Less: Debt discount, net of amortization	(2,411		)	(2,766		)
Less: Deferred financing costs, net of amortization	(2,725		)	(3,133		)
	344,864			344,101
2021 Notes	—			350,000
Less: Debt discount, net of amortization	—			(1,789		)
Less: Deferred financing costs, net of amortization	—			(2,311		)
	—			345,900
Long-term debt	$	1,628,814		$	1,529,501

Credit Facility

As of June 30, 2019, there were $15.2 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.7%. The weighted average annual interest rate on the outstanding balance under the Credit Facility, excluding the effect of interest rate swaps, was 5.3% and 5.4% at June 30, 2019 and December 31, 2018, respectively. We incurred $0.6 million in commitment fees on the daily unused amount of the Credit Facility during each of the three months ended June 30, 2019 and 2018 and $1.1 million during each of the six months ended June 30, 2019 and 2018.

We must maintain the following consolidated financial ratios, as defined in our 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 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 satisfying certain thresholds is completed and for the two quarters immediately following such quarter.

As of June 30, 2019, the ratio requirements above did not constrain the undrawn capacity and as such, all of the $442.3 million of undrawn capacity was available for additional borrowings. As of June 30, 2019, we were in compliance with all covenants under the Credit Facility agreement.

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2027 Notes

On March 21, 2019, we completed a private offering of $500.0 million aggregate principal amount of 6.875% senior notes due April 2027 and received net proceeds of $491.2 million after deducting issuance costs. The $8.8 million of issuance costs were recorded as deferred financing costs within long-term debt in our condensed consolidated balance sheets and are being amortized to interest expense in our condensed consolidated statement of operations over the term of the notes. The net proceeds were used to repay borrowings outstanding under our Credit Facility as of March 31, 2019.

The 2027 Notes have not been and will not be registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the U.S. except pursuant to a registration exemption under the Securities Act and applicable state securities laws. We offered and issued the 2027 Notes only to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to certain non-U.S. persons outside the U.S. in accordance with Regulation S under the Securities Act.

The 2027 Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by Archrock and all of its existing subsidiaries, other than Archrock Partners, L.P. and APLP Finance Corp., which are co-issuers of the 2027 Notes, and certain of its future subsidiaries. The 2027 Notes and the guarantees rank equally in right of payment with all of Archrock and the guarantors’ existing and future senior indebtedness.

The 2027 Notes may be redeemed at any time, in whole or in part, at specified redemption prices and make-whole premiums, plus any accrued and unpaid interest.

Redemption of 2021 Notes

On April 5, 2019, the 2021 Notes were redeemed at 100% of their $350.0 million aggregate principal amount plus accrued and unpaid interest of $0.2 million with borrowings from the Credit Facility. We recorded a debt extinguishment loss of $3.7 million related to the redemption during the three and six months ended June 30, 2019.

2022 Notes

The 2022 Notes are guaranteed on a senior unsecured basis by all of our existing subsidiaries (other than Archrock Partners Finance Corp., which is a co-issuer of the 2022 Notes) and certain of our future subsidiaries. The 2022 Notes and the guarantees, respectively, are our and the guarantors’ general unsecured senior obligations, rank equally in right of payment with all of our and the guarantors’ other senior obligations and are effectively subordinated to all of our and the guarantors’ existing and future secured debt to the extent of the value of the collateral securing such indebtedness. In addition, the 2022 Notes and guarantees are effectively subordinated to all existing and future indebtedness and other liabilities of any future non-guarantor subsidiaries. All of our subsidiaries are 100% owned, directly or indirectly, by us and guarantees by our subsidiaries are full and unconditional and constitute joint and several obligations. We have no assets or operations independent of our subsidiaries and there are no significant restrictions upon our subsidiaries’ ability to distribute funds to us. Archrock Partners Finance Corp. has no operations and does not have revenue other than as may be incidental as co-issuer of the 2022 Notes. Because we have no independent operations, the guarantees are full and unconditional (subject to customary release provisions) and constitute joint and several obligations of our subsidiaries other than Archrock Partners Finance Corp. and as a result, we have not included consolidated financial information of our subsidiaries.

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5. Revenue from Contracts with Customers

Disaggregation of Revenue

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
0 - 1,000 horsepower per unit	$	57,826	$	54,389	$	115,987	$	108,816
1,001 - 1,500 horsepower per unit	69,546		63,390		137,753		124,084
Over 1,500 horsepower per unit	41,684		32,465		80,709		63,900
Other (1)	328		622		654		1,068
Total revenue (2)	$	169,384	$	150,866	$	335,103	$	297,868

——————

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

⁽²⁾  Included $2.1 million and $1.4 million for the three months ended June 30, 2019 and 2018, respectively, and $4.2 million and $2.5 million for the six months ended June 30, 2019 and 2018, respectively, related to billable maintenance on owned units that was recognized at a point in time. All other revenue is recognized over time.

Performance Obligations

As of June 30, 2019, we had $289.0 million of remaining performance obligations related to our contract operations. 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 2024 as follows (in thousands):

	2019		2020		2021		2022		2023		2024		Total
Remaining performance obligations	$	134,148	$	109,586	$	35,531	$	8,295	$	1,122	$	293	$	288,975

Contract Balances

As of June 30, 2019 and December 31, 2018, our receivables from contracts with customers, net of allowance for doubtful accounts, were $82.1 million and $78.6 million, respectively. As of June 30, 2019 and December 31, 2018, our contract liabilities were $9.4 million and $9.7 million, respectively, which are included in deferred revenue and other liabilities in our condensed consolidated balance sheets. Freight billings to customers for the transport of compressor assets often result in a contract liability. We recognized $9.4 million of our December 31, 2018 contract liability balance as revenue during the six months ended June 30, 2019, primarily related to freight billings.

6. Derivatives

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

At June 30, 2019, the following interest rate swaps, entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates, were outstanding (in millions):

Expiration Date	Notional Value
May 2020	$	100
March 2022	300
	$	400

The counterparties to our 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. We have no collateral posted for the derivative instruments.

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

We expect the hedging relationship to be highly effective 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 perform quarterly qualitative prospective and retrospective hedge effectiveness assessments 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 $0.3 million of the deferred gain attributable to interest rate swaps included in accumulated other comprehensive income at June 30, 2019 will be reclassified into earnings as interest income at then-current values during the next 12 months as the underlying hedged transactions occur.

As of June 30, 2019, the weighted average effective fixed interest rate on our interest rate swaps was 1.8%.

The following table presents the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated balance sheets (in thousands):

	June 30, 2019			December 31, 2018
Derivative asset	$	336		$	3,185
Other assets	—			4,122
Total derivative assets	$	336		$	7,307
Other liabilities	$	(1,574	)	$	—

The following tables present the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated statements of operations (in thousands):

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Pre-tax gain (loss) recognized in other comprehensive income (loss)	$	(4,529	)	$	2,245	$	(6,828	)	$	6,941
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense, net	791			6		1,717			(449		)

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Total amount of interest expense, net in which the effects of cash flow hedges are recorded	$	25,720	$	22,542	$	49,148	$	44,151
Amount of gain reclassified from accumulated other comprehensive income (loss) into interest expense, net	791		207		1,717		153

See Note 7 (“Fair Value Measurements”) for further details on our derivative instruments.

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7. Fair Value Measurements

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 London Interbank Offered Rate forward 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, 2019			December 31, 2018
Interest rate swaps asset	$	336		$	7,307
Interest rate swaps liability	(1,574		)	—

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2019, 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 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 $0.8 million and $1.0 million at June 30, 2019 and December 31, 2018, respectively. See Note 8 (“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 our 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, 2019		December 31, 2018
Carrying amount of fixed rate debt (1)	$	836,314	$	690,001
Fair value of fixed rate debt	881,000		674,000

——————

⁽¹⁾  Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 4 (“Long-Term Debt”).

8. 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.

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Idle compressor units retired from the active fleet	75		70		90		105
Horsepower of idle compressor units retired from the active fleet	19,000		17,000		32,000		30,000
Impairment recorded on idle compressor units retired from the active fleet	$	3,621	$	3,846	$	6,305	$	6,912

9. Income Taxes

Unrecognized Tax Benefits

As of June 30, 2019, we believe it is reasonably possible that $1.2 million of our unrecognized tax benefits, including penalties and interest, will be reduced prior to June 30, 2020 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities which could materially differ from this estimate.

10. Partners’ Capital

Merger Transaction

In April 2018, Archrock completed the acquisition of all of our outstanding common units and we became a wholly-owned subsidiary of Archrock. Additionally, all outstanding treasury units were retired and our incentive distribution rights, all of which were previously owned by Archrock prior to the Merger, were canceled and ceased to exist. As a result of the Merger, our common units are no longer publicly traded. Our 2021 Notes and 2022 Notes were not impacted by the Merger.

Prior to the Merger, public unitholders held a 57% ownership interest in us and Archrock owned our remaining equity interests, including 29,064,637 common units and 1,422,458 general partner units, collectively representing a 43% interest.

Cash Distributions

As of the closing of the Merger, any distributions are paid to Archrock as the owner of all outstanding common and general partner units. On July 29, 2019, our board of directors approved a cash distribution of $0.3075 per common unit, or approximately $22.0 million, to be paid to Archrock on August 14, 2019.

11. Commitments and Contingencies

Insurance Matters

Our business can be hazardous, involving unforeseen circumstances such as uncontrollable flows of natural gas or well fluids and fires or explosions. Archrock insures our property and operations against many, but not all, of these risks. 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.

In addition, Archrock is substantially self-insured for worker’s compensation, employer’s liability, property, auto liability, general liability and employee group health claims in view of the relatively high per-incident deductibles it absorbs under its insurance arrangements for these risks. Losses up to the deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages.

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Tax Matters

We are subject to a number of state and local taxes that are not income-based. As many of these taxes are subject to audit by the taxing authorities, it is possible that an audit could result in additional taxes due. We accrue for such additional taxes when we determine that it is probable that we have incurred a liability and we can reasonably estimate the amount of the liability. As of each of June 30, 2019 and December 31, 2018, we accrued $3.2 million 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.

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. 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.

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Item 2. Management’s Narrative Analysis of Results of Operations

We meet the conditions specified in General Instruction H(1)(a) and (b) of Form 10-Q and are thereby permitted to use the reduced disclosure format for wholly-owned subsidiaries of reporting companies specified therein. Accordingly, in lieu of the information called for by Part I Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” we have included “Management’s Narrative Analysis of Results of Operations” to explain the reasons for material changes in the amount of revenue and expense items in the year-to-date periods reported herein.

The following analysis of our 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 2018 Form 10-K.

Financial Results of Operations

The following table presents our results for the six months ended June 30, 2019 compared to the six months ended June 30, 2018 (in thousands):

	Six Months Ended June 30,
	2019			2018
Revenue	$	335,103		$	297,868
Cost of sales (excluding depreciation and amortization)	132,067			116,528
Selling, general and administrative	42,609			39,145
Depreciation and amortization	71,815			68,224
Long-lived asset impairment	6,305			6,912
Interest expense, net	49,148			44,151
Debt extinguishment loss	3,653			—
Transaction-related costs	2,292			2,716
Other income, net	(861		)	(681		)
Provision for income taxes	1,115			102
Net income	$	26,960		$	20,771

Revenue. The increase in revenue during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily due to an increase in contract operations rates driven by an increase in customer demand as well as an increase in average operating horsepower.

Cost of sales (excluding depreciation and amortization). The increase in cost of sales (excluding depreciation and amortization) during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily driven by increases in maintenance, freight and lube oil expense associated with the increase in average operating horsepower.

Selling, general and administrative. SG&A is primarily comprised of an allocation of expenses, including costs for personnel support and related expenditures, from Archrock to us pursuant to the terms of the Omnibus Agreement. The increase in SG&A was primarily due to an increase in costs allocated to us by Archrock, partially offset by a decrease in bad debt expense. The increase in costs allocated to us by Archrock was driven by an overall increase in SG&A incurred by Archrock and an increase in our available horsepower as compared to the combined available horsepower of Archrock and us.

Depreciation and amortization. The increase in depreciation and amortization expense during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily due to an increase in depreciation expense associated with fixed asset additions and assets purchased from Archrock, partially offset by 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 2018 and early 2019.

Long-lived asset impairment. During the six months ended June 30, 2019 and 2018, 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 8 (“Long-Lived Asset Impairment”) to our Financial Statements for further details.

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

	Six Months Ended June 30,
	2019		2018
Idle compressor units retired from the active fleet	90		105
Horsepower of idle compressor units retired from the active fleet	32,000		30,000
Impairment recorded on idle compressor units retired from the active fleet	$	6,305	$	6,912

Interest expense, net. The increase in interest expense, net during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily due to an increase in the average outstanding balance of long-term debt, partially offset by a decrease in the weighted average effective interest rate.

Debt extinguishment loss. We recorded a debt extinguishment loss of $3.7 million during the six months ended June 30, 2019 as a result of the redemption of our 2021 Notes. See Note 4 (“Long-Term Debt”) to our Financial Statements for further details.

Transaction-related costs. During the six months ended June 30, 2019, we incurred $2.3 million of financial advisory, legal and other professional fees related to the Elite Acquisition and Harvest Sale. During the six months ended June 30, 2018, we incurred $2.7 million of such fees related to the Merger. See Note 1 (“Organization and Basis of Presentation”) and Note 10 (“Partners’ Capital”) to our Financial Statements for further details of these transactions.

Other income, net. The increase in other income, net during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily due to income of $0.3 million related to equipment damaged at a customer site during the six months ended June 30, 2019, partially offset by a $0.1 million decrease in the gain on sale of property, plant and equipment.

Provision for income taxes. The increase in provision for income taxes during the six months ended June 30, 2019 compared to the six months ended June 30, 2018 was primarily due to the release of an unrecognized tax benefit due to the settlement of a tax audit during the six months ended June 30, 2018.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

The information called for by this Item 3 is omitted pursuant to General Instruction H(2) to Form 10-Q (Omission of Information by Certain Wholly-Owned Subsidiaries).

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, 2019 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

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. 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.

Item 1A. Risk Factors

The following risk factors became significant to us in the second quarter of 2019 and should be read in conjunction with the risk factors previously disclosed in our 2018 Form 10-K.

The proposed Elite Acquisition may require significant time and attention of our management, and we may not achieve the intended benefits of the transaction as and when expected, or at all. Difficulties with the integration of the Elite Compression business and workforce could have an adverse effect on our business.

On June 23, 2019, Archrock entered into an asset purchase agreement with Elite Compression pursuant to which Archrock will acquire from Elite Compression substantially all of its assets, liabilities and workforce for aggregate consideration of $205.0 million cash and 21,656,683 newly-issued shares of Archrock common stock. The Elite Acquisition is expected to close in the third quarter of 2019, subject to certain customary closing conditions and the consummation of the Harvest Sale. See Note 1 (“Organization and Basis of Presentation”) to our Financial Statements for further details of these transactions.

The integration of Elite Compression will continue to require significant expense, time and the attention of our management, which may divert resources away from the operation of our business and the execution of our other strategic initiatives. In addition, Archrock will operate a larger combined organization and the difficulties associated with integrating the acquired assets, infrastructure and personnel into its existing operations may require additional time or expense. We do not have any of our own employees, but rather rely on Archrock’s employees to operate our business. Archrock’s and Elite Compression’s employees may be uncertain about their future roles within Archrock pending the completion of the Elite Acquisition, which could lead to departures and increased expenses related to hiring and training new employees. Further, if the Elite Acquisition is completed, we may not realize the benefits we expect to realize. Any such difficulties could have an adverse effect on our business, results of operations and financial condition.

Further, we may not be successful in integrating the proposed Elite Acquisition into our existing operations within our anticipated timeframe, which may result in unforeseen operational difficulties and expenses, diminish our financial performance or require a disproportionate amount of our management’s attention to address. In addition, the acquired business or assets may perform at levels below the levels Archrock anticipated at the time of acquiring such business or assets due to factors beyond its control. As a result, there can be no assurance that the proposed Elite Acquisition will deliver the benefits anticipated by us, and any failure to create such benefits may result in a negative impact to, or material adverse effect on, our business, results of operations and financial condition.

The proposed Elite Acquisition will result in our dependence on Hilcorp for a significant portion of our revenue. The loss of business with Hilcorp or the inability or failure of Hilcorp to meet its payment obligations may adversely affect our financial results.

In connection with the proposed Elite Acquisition, Elite Compression’s contract operations services agreements will transfer to us and we expect that Hilcorp, the primary customer of Elite Compression, will account for a significant portion of our future revenue.

During the year ended December 31, 2018, Hilcorp accounted for approximately 1% of our revenue. If the Elite Acquisition is completed, we estimate that Hilcorp will become one of our most significant customers. Any loss of business from Hilcorp, unless offset by additional contract compression services revenue from other customers, or the inability or failure of Hilcorp to meet its payment obligations could have a material adverse effect on our business, results of operations and financial condition.

25

Item 2. Unregistered Sales of Equity Securities

The information called for by this Item 2 is omitted pursuant to General Instruction H(2) to Form 10-Q (Omission of Information by Certain Wholly-Owned Subsidiaries).

Item 3. Defaults Upon Senior Securities

The information called for by this Item 3 is omitted pursuant to General Instruction H(2) to Form 10-Q (Omission of Information by Certain Wholly-Owned Subsidiaries).

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

26

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 the Registrant’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 the Registrant’s Current Report on Form 8-K filed on January 16, 2018
3.1	Certificate of Limited Partnership of UCO Partners, L.P. (now Archrock Partners, L.P), incorporated by reference to Exhibit 3.1 to the Registrant’s Registration Statement on Form S-1 filed on June 27, 2006
3.2	Certificate of Amendment to Certificate of Limited Partnership of Universal Compression Partners, L.P. (now Archrock Partners, L.P.), dated as of August 20, 2007, incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on August 24, 2007
3.3	Certificate of Amendment of Certificate of Limited Partnership of Exterran Partners, L.P. (now Archrock Partners, L.P.), incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on November 5, 2015
3.4	Composite Certificate of Limited Partnership of Archrock Partners, L.P., incorporated by reference to Exhibit 3.4 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2015
3.5	First Amended and Restated Agreement of Limited Partnership of Exterran Partners, L.P. (now Archrock Partners, L.P.), as amended, incorporated by reference to Exhibit 3.3 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008
3.6	Certificate of Limited Partnership of UCO General Partner, LP (now Archrock General Partner, L.P.), incorporated by reference to Exhibit 3.3 to the Registrant’s Registration Statement on Form S-1 filed on June 27, 2006
3.7	Amended and Restated Limited Partnership Agreement of UCO General Partner, LP (now Archrock General Partner, L.P.), incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K filed on October 26, 2006
3.8	Certificate of Formation of UCO GP, LLC (now Archrock GP, LLC), incorporated by reference to Exhibit 3.5 to the Registrant’s Registration Statement on Form S-1 filed June 27, 2006
3.9	Amended and Restated Limited Liability Company Agreement of UCO GP, LLC (now Archrock GP, LLC), incorporated by reference to Exhibit 3.3 to the Registrant’s Current Report on Form 8-K filed on October 26, 2006
3.10	Amendment No. 2 to the First Amended and Restated Agreement of Limited Partnership of Archrock Partners, L.P., dated December 22, 2017, incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on December 22, 2017
4.1	Indenture, dated as of March 27, 2013, by and among Exterran Partners, L.P., EXLP Finance Corp., the Guarantors named therein and Wells Fargo Bank, National Association, incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on March 28, 2013
4.2	Registration Rights Agreement, dated as of March 27, 2013, by and among Exterran Partners, L.P., EXLP Finance Corp., the Guarantors named therein and Wells Fargo Securities, LLC, as representative of the Initial Purchasers, incorporated by reference to Exhibit 4.2 to the Registrant’s Current Report on Form 8-K filed on March 28, 2013
4.3	Indenture, dated as of April 7, 2014, by and among Exterran Partners, L.P., EXLP Finance Corp., the Guarantors named therein and Wells Fargo Bank, National Association, incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on April 11, 2014
4.4	Registration Rights Agreement, dated as of April 7, 2014, by and among Exterran Partners, L.P., EXLP Finance Corp., the Guarantors named therein and Wells Fargo Securities, LLC, as representative of the Initial Purchasers, incorporated by reference to Exhibit 4.2 to the Registrant’s Current Report on Form 8-K filed on April 11, 2014
4.5	Indenture, dated as of March 21, 2019, by and among Archrock Partners, L.P., Archrock Partners Finance Corp., the guarantors party thereto and Wells Fargo Bank, National Association, as trustee, incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on March 21, 2019
31.1*	Certification of the Principal Executive Officer of Archrock GP LLC (as general partner of the general partner of Archrock Partners, L.P.) pursuant to Rule 13a-14 under the Securities Exchange Act of 1934
31.2*	Certification of the Principal Financial Officer of Archrock GP LLC (as general partner of the general partner of Archrock Partners, L.P.) pursuant to Rule 13a-14 under the Securities Exchange Act of 1934
32.1**	Certification of the Chief Executive Officer of Archrock GP LLC (as general partner of the general partner of Archrock Partners, L.P.) 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 of Archrock GP LLC (as general partner of the general partner of Archrock Partners, L.P.) 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.

27

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 PARTNERS, L.P.
By:	ARCHROCK GENERAL PARTNER, L.P.
	its General Partner
By:	ARCHROCK GP LLC
	its General Partner
By:	/s/ DOUGLAS S. ARON
	Douglas S. Aron
	Senior Vice President and Chief Financial Officer
	(Principal Financial Officer)
By:	/s/ DONNA A. HENDERSON
	Donna A. Henderson
	Vice President and Chief Accounting Officer
	(Principal Accounting Officer)
	July 30, 2019

28

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 Partners, L.P.;

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: July 30, 2019

/s/ D. BRADLEY CHILDERS
Name:	D. Bradley Childers
Title:	Chief Executive Officer, Archrock GP LLC
	(Principal Executive Officer)
	As General Partner of Archrock General Partner, L.P.
	As General Partner of Archrock Partners, L.P.

EX-31.2

Exhibit 31.2

Certification

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

I, Douglas S. Aron, certify that:

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

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: July 30, 2019

/s/ DOUGLAS S. ARON
Name:	Douglas S. Aron
Title:	Chief Financial Officer, Archrock GP LLC
	(Principal Financial Officer)
	As General Partner of Archrock General Partner, L.P.
	As General Partner of Archrock Partners, L.P.

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 Partners, L.P. (the “Partnership”) for the quarter ended June 30, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), D. Bradley Childers, as Chief Executive Officer of Archrock GP LLC, the general partner of the Partnership’s general partner, 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 Partnership.

/s/ D. BRADLEY CHILDERS
Name:	D. Bradley Childers
Title:	Chief Executive Officer, Archrock GP LLC
	As General Partner of Archrock General Partner, L.P.
	As General Partner of Archrock Partners, L.P.

Date: July 30, 2019

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 Partnership and will be retained by the Partnership 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 Partners, L.P. (the “Partnership”) for the quarter ended June 30, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Douglas S. Aron, as Chief Financial Officer of Archrock GP LLC, the general partner of the Partnership’s general partner, 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 Partnership.

/s/ DOUGLAS S. ARON
Name:	Douglas S. Aron
Title:	Chief Financial Officer, Archrock GP LLC
	As General Partner of Archrock General Partner, L.P.
	As General Partner of Archrock Partners, L.P.

Date: July 30, 2019

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 Partnership and will be retained by the Partnership and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	6 Months Ended
	Jun. 30, 2019	Jul. 29, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Commission File Number	001-33078
Entity Registrant Name	Archrock Partners, L.P.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-3935108
Entity Street Name	9807 Katy Freeway
Entity Suite Number	Suite 100
Entity City	Houston
Entity State	TX
Entity Postal Zip Code	77024
Area Code	281
Local Phone Number	836-8000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		70,231,036
Entity Central Index Key	0001367064
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2019
No Trading Symbol Flag
Document Fiscal Period Focus	Q2

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash	$ 229	$ 264
Accounts receivable, trade, net of allowance of $1,064 and $1,253, respectively	84,003	80,606
Tax refund receivable	0	14,000
Derivative asset	336	3,185
Other current assets	81	123
Total current assets	84,649	98,178
Property, plant and equipment	3,106,909	2,933,568
Accumulated depreciation	(1,084,111)	(1,042,182)
Property, plant and equipment, net	2,022,798	1,891,386
Intangible assets, net	38,903	45,839
Contract costs, net	35,901	32,220
Loan receivable due from Archrock	9,500	20,000
Other assets	11,585	17,801
Total assets	2,203,336	2,105,424
Current liabilities:
Accounts payable, trade	10,158	10,646
Accrued liabilities	11,968	10,129
Deferred revenue	9,036	9,577
Accrued interest	17,249	11,999
Due to Archrock, net	1,132	17,251
Total current liabilities	49,543	59,602
Long-term debt	1,628,814	1,529,501
Other liabilities	11,837	9,175
Total liabilities	1,690,194	1,598,278
Commitments and contingencies (Note 11)
Partners’ capital:
Common units: 70,231,036 issued and outstanding	502,504	488,209
General partner units: 1,422,458 issued and outstanding	11,876	11,630
Accumulated other comprehensive income (loss)	(1,238)	7,307
Total partners’ capital	513,142	507,146
Total liabilities and partners’ capital	$ 2,203,336	$ 2,105,424

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, trade, allowance (in dollars)	$ 1,064	$ 1,253
Common units, issued (in units)	70,231,036	70,231,036
Common units, outstanding (in units)	70,231,036	70,231,036
General partner units, issued (in units)	1,422,458	1,422,458
General partner units, outstanding (in units)	1,422,458	1,422,458

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 169,384	$ 150,866	$ 335,103	$ 297,868
Cost of sales (excluding depreciation and amortization)	64,343	60,226	132,067	116,528
Selling, general and administrative	21,502	19,344	42,609	39,145
Depreciation and amortization	36,439	33,898	71,815	68,224
Long-lived asset impairment	3,621	3,846	6,305	6,912
Interest expense, net	25,720	22,542	49,148	44,151
Debt extinguishment loss	3,653		3,653	0
Transaction-related costs	2,292	1,340	2,292	2,716
Other income, net	(1,413)	(394)	(861)	(681)
Income before income taxes	13,227	10,064	28,075	20,873
Provision for (benefit from) income taxes	586	(417)	1,115	102
Net income	$ 12,641	$ 10,481	$ 26,960	$ 20,771

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 12,641	$ 10,481	$ 26,960	$ 20,771
Other comprehensive income (loss):
Interest rate swap gain (loss), net of reclassifications to earnings	(5,320)	2,178	(8,545)	7,163
Amortization of terminated interest rate swaps	0	61	0	227
Total other comprehensive income (loss)	(5,320)	2,239	(8,545)	7,390
Comprehensive income	$ 7,321	$ 12,720	$ 18,415	$ 28,161

XML

CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL - USD ($) $ in Thousands	Total	Treasury Units	Accumulated Other Comprehensive Income (Loss)	Partners' Capital Common Units	Partners' Capital General Partner Units
Beginning balance at Dec. 31, 2017	$ 514,740	$ (2,341)	$ 4,476	$ 501,023	$ 11,582
Beginning balance (in units) at Dec. 31, 2017		(113,609)		70,310,590	1,421,768
Increase (Decrease) in Partners' Capital
Contribution (distributions) of capital, net	1,504			$ 1,504
Cash distributions	(36,291)			(35,571)	$ (720)
Merger-related adjustments		$ 2,591		$ (2,591)
Merger-related adjustments (in units)		132,645		(132,645)
Issuance of common units for vesting of phantom units (in units)				53,091
Treasury units purchased	(250)	$ (250)
Treasury units purchased (in units)		(19,036)
Issuance of general partner units	9				$ 9
Issuance of general partner units (in units)					690
Unit-based compensation expense	314			$ 314
Comprehensive income
Net income	20,771			20,359	$ 412
Interest rate swap gain (loss), net of reclassifications to earnings	7,163		7,163
Amortization of terminated interest rate swaps	227		227
Ending balance at Jun. 30, 2018	521,284	$ 0	11,866	$ 497,875	$ 11,543
Ending balance (in units) at Jun. 30, 2018		0		70,231,036	1,422,458
Beginning balance at Mar. 31, 2018	524,721	$ (2,591)	9,627	$ 506,035	$ 11,650
Beginning balance (in units) at Mar. 31, 2018		(132,645)		70,363,681	1,422,458
Increase (Decrease) in Partners' Capital
Contribution (distributions) of capital, net	(321)			$ (321)
Cash distributions	(15,836)			(15,521)	$ (315)
Merger-related adjustments		$ 2,591		$ (2,591)
Merger-related adjustments (in units)		132,645		(132,645)
Comprehensive income
Net income	10,481			$ 10,273	208
Interest rate swap gain (loss), net of reclassifications to earnings	2,178		2,178
Amortization of terminated interest rate swaps	61		61
Ending balance at Jun. 30, 2018	521,284	$ 0	11,866	$ 497,875	$ 11,543
Ending balance (in units) at Jun. 30, 2018		0		70,231,036	1,422,458
Beginning balance at Dec. 31, 2018	507,146	$ 0	7,307	$ 488,209	$ 11,630
Beginning balance (in units) at Dec. 31, 2018		0		70,231,036	1,422,458
Increase (Decrease) in Partners' Capital
Contribution (distributions) of capital, net	(3,378)			$ (3,268)	$ (110)
Cash distributions	(34,394)			(33,711)	(683)
Contribution of capital - excess of fair market value of equipment sold to Archrock over equipment purchased from Archrock	4,353			4,267	86
Cash contributions from Archrock	21,000			20,583	417
Comprehensive income
Net income	26,960			26,424	536
Interest rate swap gain (loss), net of reclassifications to earnings	(8,545)		(8,545)
Amortization of terminated interest rate swaps	0
Ending balance at Jun. 30, 2019	513,142	$ 0	(1,238)	$ 502,504	$ 11,876
Ending balance (in units) at Jun. 30, 2019		0		70,231,036	1,422,458
Beginning balance at Mar. 31, 2019	522,047	$ 0	4,082	$ 506,032	$ 11,933
Beginning balance (in units) at Mar. 31, 2019		0		70,231,036	1,422,458
Increase (Decrease) in Partners' Capital
Contribution (distributions) of capital, net	(1,542)			$ (1,488)	$ (54)
Cash distributions	(17,197)			(16,856)	(341)
Contribution of capital - excess of fair market value of equipment sold to Archrock over equipment purchased from Archrock	2,513			2,427	86
Comprehensive income
Net income	12,641			12,389	252
Interest rate swap gain (loss), net of reclassifications to earnings	(5,320)		(5,320)
Amortization of terminated interest rate swaps	0
Ending balance at Jun. 30, 2019	$ 513,142	$ 0	$ (1,238)	$ 502,504	$ 11,876
Ending balance (in units) at Jun. 30, 2019		0		70,231,036	1,422,458

XML

CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Partners' Capital [Abstract]
Distribution per common unit (in dollars per unit)	$ 0.240	$ 0.221	$ 0.480	$ 0.506

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income	$ 26,960	$ 20,771
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	71,815	68,224
Long-lived asset impairment	6,305	6,912
Amortization of deferred financing costs	3,041	2,862
Amortization of debt discount	545	694
Amortization of terminated interest rate swaps	0	227
Debt extinguishment loss	3,653	0
Interest rate swaps	(802)	327
Unit-based compensation expense	0	314
Provision for (benefit from) doubtful accounts	(15)	549
Gain on sale of property, plant and equipment	(527)	(618)
Deferred income tax provision (benefit)	892	(140)
Amortization of contract costs	8,834	4,758
Deferred revenue recognized in earnings	(9,385)	(5,403)
Changes in assets and liabilities:
Accounts and other receivables	4,746	(2,477)
Contract costs, net	(12,515)	(13,102)
Deferred revenue	9,039	8,118
Other assets and liabilities	7,131	1,707
Net cash provided by operating activities	119,717	93,723
Cash flows from investing activities:
Capital expenditures	(219,910)	(115,510)
Proceeds from sale of property, plant and equipment	18,760	13,719
Proceeds from insurance and other settlements	676	252
Loans receivable from Archrock, net	10,500
Loans receivable from Archrock, net		(60,500)
Net cash used in investing activities	(189,974)	(162,039)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	1,254,000	272,830
Repayments of long-term debt	(1,151,000)	(176,636)
Payments for debt issuance costs	(8,829)	(3,332)
(Payments for) proceeds from settlement of interest rate swaps that include financing elements	800
(Payments for) proceeds from settlement of interest rate swaps that include financing elements		(207)
Distributions paid to unitholders	(34,394)	(36,291)
Contributions from Archrock	21,000	0
Net proceeds from issuance of general partner units	0	9
Purchases of treasury units	0	(250)
Increase (decrease) in amounts due to Archrock, net	(11,355)	4,166
Net cash provided by financing activities	70,222	60,289
Net decrease in cash	(35)	(8,027)
Cash, beginning of period	264	8,078
Cash, end of period	229	51
Supplemental disclosure of non-cash investing and financing transactions:
Contribution of capital for equipment overhauls and swaps	2,178	1,504
Distribution of capital for net book value difference of intercompany equipment sales	(5,556)	0
Contribution of capital for net excess of fair market value of intercompany equipment sales	$ 4,353	$ 0

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Organization and Basis of Presentation

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Organization and Basis of Presentation

1. Organization and Basis of Presentation

We are a leading provider of natural gas compression services to customers in the oil and natural gas industry throughout the U.S. Our contract operations services primarily include designing, sourcing, owning, installing, operating, servicing, repairing and maintaining natural gas compression equipment to provide natural gas compression services to our customers.

In April 2018, Archrock completed the acquisition of all of our outstanding common units that it did not already own and, as a result, we became its wholly-owned subsidiary. See Note 10 (“Partners’ Capital”) for further details of the Merger.

The accompanying unaudited condensed consolidated financial statements included herein have been prepared in accordance with GAAP and the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP are not required in these interim financial statements and have been condensed or omitted. Management believes that the information furnished 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 2018 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.

Omission of Information by Certain Wholly-Owned Subsidiaries

We meet the conditions specified in General Instruction H(1)(a) and (b) of Form 10-Q and are thereby permitted to use the reduced disclosure format for wholly-owned subsidiaries of reporting companies specified therein. Accordingly, we have omitted from this report the information called for by Part I Item 3 “Quantitative and Qualitative Disclosures About Market Risk,” Part II Item 2 “Unregistered Sales of Equity Securities” and Part II Item 3 “Defaults Upon Senior Securities.” In addition, in lieu of the information called for by Part I Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” we have included, under Item 2, “Management’s Narrative Analysis of Results of Operations” to explain the reasons for material changes in the amount of revenue and expense items in the year-to-date periods reported herein.

Recent Business Developments

Elite Acquisition

On June 23, 2019, Archrock entered into an asset purchase agreement with Elite Compression pursuant to which Archrock will acquire from Elite Compression substantially all of its assets, including a fleet of predominantly-large compressor units comprising approximately 430,000 horsepower, a fleet of vehicles, real personal property and parts inventory, and certain liabilities for aggregate consideration of $205.0 million cash and 21,656,683 newly-issued shares of Archrock common stock. The cash portion of the purchase price will be funded with borrowings on our Credit Facility. The Elite Acquisition is expected to close in the third quarter of 2019 subject to certain closing conditions and the consummation of the Harvest Sale (see below). As a result of this transaction, we expect to own the purchased fleet of compressor units and the units’ associated customer contracts.

Harvest Sale

On June 23, 2019, Archrock entered into an asset purchase agreement with Harvest pursuant to which Harvest will acquire from Archrock approximately 80,000 active and idle compression horsepower, vehicles and parts inventory for consideration of $30 million to be paid in cash. All of the compression horsepower to be sold to Harvest is owned by us. The Harvest Sale is expected to close in the third quarter of 2019, subject to customary closing conditions.

During the three and six months ended June 30, 2019, we incurred transaction costs of $2.3 million related to the Elite Acquisition and Harvest Sale, which is reflected in transaction-related costs in our condensed consolidated statements of operations.

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Recent Accounting Developments

6 Months Ended

Jun. 30, 2019

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recent Accounting Developments

2. Recent Accounting Developments

Accounting Standards Updates Implemented

Leases

ASC 842 Leases establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet. Leases are 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. We are a party to leases in our contract operations services agreements. We adopted ASC 842 Leases on January 1, 2019, and have determined that ASC 842 Leases will not have an impact on our condensed consolidated financial statements.

ASC 842 Leases provides several practical expedients, one of which is for lessors to not separate lease and nonlease components and instead account for those components as a single component if certain conditions are met. ASC 842 Leases also provides clarification for lessors on whether ASC 842 Leases or ASC 606 Revenue is applicable to the combined component based on determination of the predominant component. We have concluded that for our contract operations services agreements, in which we are a lessor, the services nonlease component is predominant over the compression unit lease component and therefore ongoing recognition of these agreements will continue to follow the ASC 606 Revenue guidance.

Accounting Standards Updates Not Yet Implemented

In August 2018, the FASB issued ASU 2018-13 which amends the required fair value measurements disclosures related to valuation techniques and inputs used, uncertainty in measurement and changes in measurements applied. These amendments are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. We are currently evaluating the impact of ASU 2018-13 on our consolidated financial statements and footnote disclosures.

In June 2016, the FASB issued ASU 2016-13 which 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 earlier recognition of allowance for losses. For public entities that meet the definition of an SEC filer, 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 and footnote disclosures.

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Related Party Transactions

6 Months Ended

Jun. 30, 2019

Related Party Transactions [Abstract]

Related Party Transactions

3. Related Party Transactions

Revolving Loan Agreement with Archrock

In conjunction with the closing of the Merger, we and Archrock entered into the Revolving Loan Agreement under which we may make loans to Archrock from time to time in an aggregate amount not to exceed the Credit Facility’s outstanding balance. The Revolving Loan Agreement matures on the maturity date of our Credit Facility. Interest on amounts loaned under the Revolving Loan Agreement is payable to us on a monthly basis and is calculated as a proportion of our total interest expense on the Credit Facility.

At June 30, 2019, the balance of outstanding borrowings under the Revolving Loan Agreement was $9.5 million. We recorded interest income earned on loans to Archrock under the Revolving Loan Agreement, which was included in interest expense, net in our condensed consolidated statements of operations, of $0.2 million and $0.6 million during the three months ended June 30, 2019 and 2018, respectively, and $0.3 million and $0.6 million during the six months ended June 30, 2019 and 2018, respectively.

Common Control Transactions

Transactions between us and Archrock and its affiliates are transactions between entities under common control. Under GAAP, transfers of assets and liabilities between entities under common control are to be initially recorded on the books of the receiving entity at the carrying value of the transferor. Any difference between consideration given and the carrying value of the assets or liabilities received is treated as a capital distribution or contribution.

Sales of Compression Equipment with Archrock

If Archrock determines in good faith that we or Archrock’s contract operations services business needs to sell compression equipment between Archrock and us, the Omnibus Agreement permits such transactions if it will not cause us to breach any existing contracts, suffer a loss of revenue under any existing contract operations services contracts or incur any unreimbursed costs. As consideration for the sale of compression equipment, the transferee will make a distribution to or receive a contribution from the transferor in an amount equal to the net book value of the compression equipment sold.

The following table summarizes compressor unit sales activity between Archrock and us (dollars in thousands):

	Three Months Ended June 30, 2019				Six Months Ended June 30, 2019
	Sold to Archrock		Purchased from Archrock		Sold to Archrock		Purchased from Archrock
Compressor units	24		29		35		59
Horsepower	7,860		10,030		16,301		20,119
Net book value	$	7,342	$	4,653	$	14,335	$	8,779

During the three and six months ended June 30, 2019, we recorded capital distributions of $2.7 million and $5.6 million, respectively, related to the difference in net book value of the compression equipment sold to and acquired from Archrock. In addition, in accordance with the Omnibus Agreement, we recorded capital contributions of $2.5 million and $4.4 million during the three and six months ended June 30, 2019, respectively, which represented the net excess of the fair market value of the equipment sold to Archrock over the equipment purchased from Archrock. No customer contracts were included in these sales.

Sales of Overhauls

During the three months ended June 30, 2019 and 2018, Archrock contributed to us $1.1 million and we distributed to Archrock $0.2 million, respectively, related to the completion of overhauls on compression equipment that was sold to us and where the overhauls were in progress on the date of the sale. Archrock contributed to us $2.2 million and $1.7 million related to the completion of such overhauls during the six months ended June 30, 2019 and 2018, respectively.

Reimbursement of Operating and SG&A Expense

Archrock provides all operational staff, corporate staff and support services reasonably necessary to run our business. These services may include, without limitation, operations, marketing, maintenance and repair, periodic overhauls of compression equipment, inventory management, legal, accounting, treasury, insurance administration and claims processing, risk management, health, safety and environmental, information technology, human resources, credit, payroll, internal audit, taxes, facilities management, investor relations, enterprise resource planning system, training, executive, sales, business development and engineering.

Archrock charges us for costs that are directly attributable to us. Costs that are indirectly attributable to us and Archrock’s other operations are allocated among Archrock’s other operations and us. The allocation methodologies vary based on the nature of the charge and have included, among other things, headcount and horsepower. We believe that the allocation methodologies used to allocate indirect costs to us are reasonable.

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Long-Term Debt

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Long-Term Debt

4. Long-Term Debt

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

	June 30, 2019			December 31, 2018
Credit Facility	$	792,500		$	839,500
2027 Notes	500,000			—
Less: Deferred financing costs, net of amortization	(8,550		)	—
	491,450			—
2022 Notes	350,000			350,000
Less: Debt discount, net of amortization	(2,411		)	(2,766		)
Less: Deferred financing costs, net of amortization	(2,725		)	(3,133		)
	344,864			344,101
2021 Notes	—			350,000
Less: Debt discount, net of amortization	—			(1,789		)
Less: Deferred financing costs, net of amortization	—			(2,311		)
	—			345,900
Long-term debt	$	1,628,814		$	1,529,501

Credit Facility

As of June 30, 2019, there were $15.2 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.7%. The weighted average annual interest rate on the outstanding balance under the Credit Facility, excluding the effect of interest rate swaps, was 5.3% and 5.4% at June 30, 2019 and December 31, 2018, respectively. We incurred $0.6 million in commitment fees on the daily unused amount of the Credit Facility during each of the three months ended June 30, 2019 and 2018 and $1.1 million during each of the six months ended June 30, 2019 and 2018.

We must maintain the following consolidated financial ratios, as defined in our 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 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 satisfying certain thresholds is completed and for the two quarters immediately following such quarter.

As of June 30, 2019, the ratio requirements above did not constrain the undrawn capacity and as such, all of the $442.3 million of undrawn capacity was available for additional borrowings. As of June 30, 2019, we were in compliance with all covenants under the Credit Facility agreement.

2027 Notes

On March 21, 2019, we completed a private offering of $500.0 million aggregate principal amount of 6.875% senior notes due April 2027 and received net proceeds of $491.2 million after deducting issuance costs. The $8.8 million of issuance costs were recorded as deferred financing costs within long-term debt in our condensed consolidated balance sheets and are being amortized to interest expense in our condensed consolidated statement of operations over the term of the notes. The net proceeds were used to repay borrowings outstanding under our Credit Facility as of March 31, 2019.

The 2027 Notes have not been and will not be registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the U.S. except pursuant to a registration exemption under the Securities Act and applicable state securities laws. We offered and issued the 2027 Notes only to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to certain non-U.S. persons outside the U.S. in accordance with Regulation S under the Securities Act.

The 2027 Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by Archrock and all of its existing subsidiaries, other than Archrock Partners, L.P. and APLP Finance Corp., which are co-issuers of the 2027 Notes, and certain of its future subsidiaries. The 2027 Notes and the guarantees rank equally in right of payment with all of Archrock and the guarantors’ existing and future senior indebtedness.

The 2027 Notes may be redeemed at any time, in whole or in part, at specified redemption prices and make-whole premiums, plus any accrued and unpaid interest.

Redemption of 2021 Notes

On April 5, 2019, the 2021 Notes were redeemed at 100% of their $350.0 million aggregate principal amount plus accrued and unpaid interest of $0.2 million with borrowings from the Credit Facility. We recorded a debt extinguishment loss of $3.7 million related to the redemption during the three and six months ended June 30, 2019.

2022 Notes

The 2022 Notes are guaranteed on a senior unsecured basis by all of our existing subsidiaries (other than Archrock Partners Finance Corp., which is a co-issuer of the 2022 Notes) and certain of our future subsidiaries. The 2022 Notes and the guarantees, respectively, are our and the guarantors’ general unsecured senior obligations, rank equally in right of payment with all of our and the guarantors’ other senior obligations and are effectively subordinated to all of our and the guarantors’ existing and future secured debt to the extent of the value of the collateral securing such indebtedness. In addition, the 2022 Notes and guarantees are effectively subordinated to all existing and future indebtedness and other liabilities of any future non-guarantor subsidiaries. All of our subsidiaries are 100% owned, directly or indirectly, by us and guarantees by our subsidiaries are full and unconditional and constitute joint and several obligations. We have no assets or operations independent of our subsidiaries and there are no significant restrictions upon our subsidiaries’ ability to distribute funds to us. Archrock Partners Finance Corp. has no operations and does not have revenue other than as may be incidental as co-issuer of the 2022 Notes. Because we have no independent operations, the guarantees are full and unconditional (subject to customary release provisions) and constitute joint and several obligations of our subsidiaries other than Archrock Partners Finance Corp. and as a result, we have not included consolidated financial information of our subsidiaries.

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Revenue from Contracts with Customers

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

5. Revenue from Contracts with Customers

Disaggregation of Revenue

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
0 - 1,000 horsepower per unit	$	57,826	$	54,389	$	115,987	$	108,816
1,001 - 1,500 horsepower per unit	69,546		63,390		137,753		124,084
Over 1,500 horsepower per unit	41,684		32,465		80,709		63,900
Other (1)	328		622		654		1,068
Total revenue (2)	$	169,384	$	150,866	$	335,103	$	297,868

——————

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

⁽²⁾  Included $2.1 million and $1.4 million for the three months ended June 30, 2019 and 2018, respectively, and $4.2 million and $2.5 million for the six months ended June 30, 2019 and 2018, respectively, related to billable maintenance on owned units that was recognized at a point in time. All other revenue is recognized over time.

Performance Obligations

As of June 30, 2019, we had $289.0 million of remaining performance obligations related to our contract operations. 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 2024 as follows (in thousands):

	2019		2020		2021		2022		2023		2024		Total
Remaining performance obligations	$	134,148	$	109,586	$	35,531	$	8,295	$	1,122	$	293	$	288,975

Contract Balances

As of June 30, 2019 and December 31, 2018, our receivables from contracts with customers, net of allowance for doubtful accounts, were $82.1 million and $78.6 million, respectively. As of June 30, 2019 and December 31, 2018, our contract liabilities were $9.4 million and $9.7 million, respectively, which are included in deferred revenue and other liabilities in our condensed consolidated balance sheets. Freight billings to customers for the transport of compressor assets often result in a contract liability. We recognized $9.4 million of our December 31, 2018 contract liability balance as revenue during the six months ended June 30, 2019, primarily related to freight billings.

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Derivatives

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

6. Derivatives

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

At June 30, 2019, the following interest rate swaps, entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates, were outstanding (in millions):

Expiration Date	Notional Value
May 2020	$	100
March 2022	300
	$	400

The counterparties to our 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. We have no collateral posted for the derivative instruments.

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

We expect the hedging relationship to be highly effective 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 perform quarterly qualitative prospective and retrospective hedge effectiveness assessments 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 $0.3 million of the deferred gain attributable to interest rate swaps included in accumulated other comprehensive income at June 30, 2019 will be reclassified into earnings as interest income at then-current values during the next 12 months as the underlying hedged transactions occur.

As of June 30, 2019, the weighted average effective fixed interest rate on our interest rate swaps was 1.8%.

The following table presents the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated balance sheets (in thousands):

	June 30, 2019			December 31, 2018
Derivative asset	$	336		$	3,185
Other assets	—			4,122
Total derivative assets	$	336		$	7,307
Other liabilities	$	(1,574	)	$	—

The following tables present the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated statements of operations (in thousands):

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Pre-tax gain (loss) recognized in other comprehensive income (loss)	$	(4,529	)	$	2,245	$	(6,828	)	$	6,941
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense, net	791			6		1,717			(449		)

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Total amount of interest expense, net in which the effects of cash flow hedges are recorded	$	25,720	$	22,542	$	49,148	$	44,151
Amount of gain reclassified from accumulated other comprehensive income (loss) into interest expense, net	791		207		1,717		153

See Note 7 (“Fair Value Measurements”) for further details on our derivative instruments.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

7. Fair Value Measurements

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 London Interbank Offered Rate forward 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, 2019			December 31, 2018
Interest rate swaps asset	$	336		$	7,307
Interest rate swaps liability	(1,574		)	—

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the six months ended June 30, 2019, 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 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 $0.8 million and $1.0 million at June 30, 2019 and December 31, 2018, respectively. See Note 8 (“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 our 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, 2019		December 31, 2018
Carrying amount of fixed rate debt (1)	$	836,314	$	690,001
Fair value of fixed rate debt	881,000		674,000

——————

⁽¹⁾ 

Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 4 (“Long-Term Debt”).

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Long-Lived Asset Impairment

6 Months Ended

Jun. 30, 2019

Asset Impairment Charges [Abstract]

Long-Lived Asset Impairment

8. 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 (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Idle compressor units retired from the active fleet	75		70		90		105
Horsepower of idle compressor units retired from the active fleet	19,000		17,000		32,000		30,000
Impairment recorded on idle compressor units retired from the active fleet	$	3,621	$	3,846	$	6,305	$	6,912

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Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

9. Income Taxes

Unrecognized Tax Benefits

As of June 30, 2019, we believe it is reasonably possible that $1.2 million of our unrecognized tax benefits, including penalties and interest, will be reduced prior to June 30, 2020 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities which could materially differ from this estimate.

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Partners' Capital

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Partners' Capital

10. Partners’ Capital

Merger Transaction

In April 2018, Archrock completed the acquisition of all of our outstanding common units and we became a wholly-owned subsidiary of Archrock. Additionally, all outstanding treasury units were retired and our incentive distribution rights, all of which were previously owned by Archrock prior to the Merger, were canceled and ceased to exist. As a result of the Merger, our common units are no longer publicly traded. Our 2021 Notes and 2022 Notes were not impacted by the Merger.

Prior to the Merger, public unitholders held a 57% ownership interest in us and Archrock owned our remaining equity interests, including 29,064,637 common units and 1,422,458 general partner units, collectively representing a 43% interest.

Cash Distributions

As of the closing of the Merger, any distributions are paid to Archrock as the owner of all outstanding common and general partner units. On July 29, 2019, our board of directors approved a cash distribution of $0.3075 per common unit, or approximately $22.0 million, to be paid to Archrock on August 14, 2019.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

11. Commitments and Contingencies

Insurance Matters

Our business can be hazardous, involving unforeseen circumstances such as uncontrollable flows of natural gas or well fluids and fires or explosions. Archrock insures our property and operations against many, but not all, of these risks. 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.

In addition, Archrock is substantially self-insured for worker’s compensation, employer’s liability, property, auto liability, general liability and employee group health claims in view of the relatively high per-incident deductibles it absorbs under its insurance arrangements for these risks. Losses up to the deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages.

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 each of June 30, 2019 and December 31, 2018, we accrued $3.2 million 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.

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. 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.

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Recent Accounting Developments Recent Accounting Developments (Policies)

6 Months Ended

Jun. 30, 2019

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Standards Updates Implemented and Accounting Standards Updates Not Yet Implemented

Accounting Standards Updates Implemented

Leases

ASC 842 Leases establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet. Leases are 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. We are a party to leases in our contract operations services agreements. We adopted ASC 842 Leases on January 1, 2019, and have determined that ASC 842 Leases will not have an impact on our condensed consolidated financial statements.

ASC 842 Leases provides several practical expedients, one of which is for lessors to not separate lease and nonlease components and instead account for those components as a single component if certain conditions are met. ASC 842 Leases also provides clarification for lessors on whether ASC 842 Leases or ASC 606 Revenue is applicable to the combined component based on determination of the predominant component. We have concluded that for our contract operations services agreements, in which we are a lessor, the services nonlease component is predominant over the compression unit lease component and therefore ongoing recognition of these agreements will continue to follow the ASC 606 Revenue guidance.

Accounting Standards Updates Not Yet Implemented

In August 2018, the FASB issued ASU 2018-13 which amends the required fair value measurements disclosures related to valuation techniques and inputs used, uncertainty in measurement and changes in measurements applied. These amendments are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. We are currently evaluating the impact of ASU 2018-13 on our consolidated financial statements and footnote disclosures.

In June 2016, the FASB issued ASU 2016-13 which 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 earlier recognition of allowance for losses. For public entities that meet the definition of an SEC filer, 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 and footnote disclosures.

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Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2019

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following table summarizes compressor unit sales activity between Archrock and us (dollars in thousands):

	Three Months Ended June 30, 2019				Six Months Ended June 30, 2019
	Sold to Archrock		Purchased from Archrock		Sold to Archrock		Purchased from Archrock
Compressor units	24		29		35		59
Horsepower	7,860		10,030		16,301		20,119
Net book value	$	7,342	$	4,653	$	14,335	$	8,779

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Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt

We must maintain the following consolidated financial ratios, as defined in our 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 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 satisfying certain thresholds is completed and for the two quarters immediately following such quarter.

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

	June 30, 2019			December 31, 2018
Credit Facility	$	792,500		$	839,500
2027 Notes	500,000			—
Less: Deferred financing costs, net of amortization	(8,550		)	—
	491,450			—
2022 Notes	350,000			350,000
Less: Debt discount, net of amortization	(2,411		)	(2,766		)
Less: Deferred financing costs, net of amortization	(2,725		)	(3,133		)
	344,864			344,101
2021 Notes	—			350,000
Less: Debt discount, net of amortization	—			(1,789		)
Less: Deferred financing costs, net of amortization	—			(2,311		)
	—			345,900
Long-term debt	$	1,628,814		$	1,529,501

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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2019

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,				Six Months Ended June 30,
	2019		2018		2019		2018
0 - 1,000 horsepower per unit	$	57,826	$	54,389	$	115,987	$	108,816
1,001 - 1,500 horsepower per unit	69,546		63,390		137,753		124,084
Over 1,500 horsepower per unit	41,684		32,465		80,709		63,900
Other (1)	328		622		654		1,068
Total revenue (2)	$	169,384	$	150,866	$	335,103	$	297,868

——————

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

⁽²⁾ 

Included $2.1 million and $1.4 million for the three months ended June 30, 2019 and 2018, respectively, and $4.2 million and $2.5 million for the six months ended June 30, 2019 and 2018, respectively, related to billable maintenance on owned units that was recognized at a point in time. All other revenue is recognized over time.

Remaining Performance Obligation Satisfaction

The remaining performance obligations will be recognized through 2024 as follows (in thousands):

	2019		2020		2021		2022		2023		2024		Total
Remaining performance obligations	$	134,148	$	109,586	$	35,531	$	8,295	$	1,122	$	293	$	288,975

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

At June 30, 2019, the following interest rate swaps, entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates, were outstanding (in millions):

Expiration Date	Notional Value
May 2020	$	100
March 2022	300
	$	400

Effect of Derivative Instruments on Consolidated Financial Position

The following table presents the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated balance sheets (in thousands):

	June 30, 2019			December 31, 2018
Derivative asset	$	336		$	3,185
Other assets	—			4,122
Total derivative assets	$	336		$	7,307
Other liabilities	$	(1,574	)	$	—

Effect of Derivative Instruments on Results of Operations

The following tables present the effect of our derivative instruments designated as cash flow hedging instruments on our condensed consolidated statements of operations (in thousands):

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Pre-tax gain (loss) recognized in other comprehensive income (loss)	$	(4,529	)	$	2,245	$	(6,828	)	$	6,941
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense, net	791			6		1,717			(449		)

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Total amount of interest expense, net in which the effects of cash flow hedges are recorded	$	25,720	$	22,542	$	49,148	$	44,151
Amount of gain reclassified from accumulated other comprehensive income (loss) into interest expense, net	791		207		1,717		153

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

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

he 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, 2019			December 31, 2018
Interest rate swaps asset	$	336		$	7,307
Interest rate swaps liability	(1,574		)	—

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, 2019		December 31, 2018
Carrying amount of fixed rate debt (1)	$	836,314	$	690,001
Fair value of fixed rate debt	881,000		674,000

——————

⁽¹⁾ 

Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 4 (“Long-Term Debt”).

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Long-Lived Asset Impairment (Tables)

6 Months Ended

Jun. 30, 2019

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 (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Idle compressor units retired from the active fleet	75		70		90		105
Horsepower of idle compressor units retired from the active fleet	19,000		17,000		32,000		30,000
Impairment recorded on idle compressor units retired from the active fleet	$	3,621	$	3,846	$	6,305	$	6,912

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Organization and Basis of Presentation - (Narratives) (Details) hp in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2019 USD ($) hp shares	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Property, Plant and Equipment
Payments to acquire assets				$ 219,910	$ 115,510
Proceeds from sale of property, plant and equipment				18,760	13,719
Transaction-related costs		$ 2,292	$ 1,340	2,292	$ 2,716
Elite Acquisition | Harvest
Property, Plant and Equipment
Transaction-related costs		$ 2,300		$ 2,300
Archrock, Inc. | Forecasted | Disposal Group, Disposed of by Sale | Harvest
Property, Plant and Equipment
Compressor units horsepower (horsepower) | hp	80
Proceeds from sale of property, plant and equipment	$ 30,000
Archrock, Inc. | Forecasted | Elite Acquisition
Property, Plant and Equipment
Compressor units horsepower (horsepower) | hp	430
Payments to acquire assets	$ 205,000
Archrock, Inc. | Forecasted | Elite Acquisition | Common Stock
Property, Plant and Equipment
Shares issued as compensation for asset acquisition (shares) | shares	21,656,683

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Related Party Transactions (Narratives) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) contract	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Related party transactions
Loan receivable due from Archrock	$ 9,500		$ 9,500		$ 20,000
Contribution of capital for net excess of fair market value of intercompany equipment sales	2,513		4,353
Affiliated Entity | Archrock
Related party transactions
Loan receivable due from Archrock	9,500		9,500
Interest income from notes receivable	200	$ 600	300	$ 600
Distributions recorded related to differences in net book value of compressor units exchanged to our assets transferred to related party	2,700		5,600
Contribution of capital for net excess of fair market value of intercompany equipment sales	2,500		$ 4,400
Number of customer contracts included in transfers | contract			0
Amount contributed (distributed) by related party related to completion of overhauls on compression equipment	$ 1,100	$ (200)	$ 2,200	$ 1,700

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Related Party Transactions - Transfers (Details) - Archrock - Affiliated Entity hp in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) compressor_unit hp	Jun. 30, 2019 USD ($) compressor_unit hp
Related party transactions
Compressor units sold (compressor) | compressor_unit	24	35
Compressor units purchased (compressor) | compressor_unit	29	59
Horse power related to compressor units sold (horsepower) | hp	7,860	16,301
Horse power related to compressor units purchased (horsepower) | hp	10,030	20,119
Net book value of compressor units sold | $	$ 7,342	$ 14,335
Net book value of compressor units purchased | $	$ 4,653	$ 8,779

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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Long-Term Debt
Long-term debt	$ 1,628,814	$ 1,529,501
Senior Notes | 2027 Notes
Long-Term Debt
Long-term debt, gross	500,000	0
Less: Deferred financing costs, net of amortization	(8,550)	0
Long-term debt	491,450	0
Senior Notes | 2022 Notes
Long-Term Debt
Long-term debt, gross	350,000	350,000
Less: Deferred financing costs, net of amortization	(2,725)	(3,133)
Less: Debt discount, net of amortization	(2,411)	(2,766)
Long-term debt	344,864	344,101
Senior Notes | 2021 Notes
Long-Term Debt
Long-term debt, gross	0	350,000
Less: Deferred financing costs, net of amortization	0	(2,311)
Less: Debt discount, net of amortization	0	(1,789)
Long-term debt	0	345,900
Revolving Credit Facility | Credit Facility
Long-Term Debt
Long-term debt	$ 792,500	$ 839,500

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Long-Term Debt - Credit Facility (Details) - Revolving Credit Facility - Credit Facility - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Long-Term Debt
Letters of credit outstanding	$ 15.2		$ 15.2
Spread on variable rate			2.70%
Weighted average interest rate (percentage)	5.30%		5.30%		5.40%
Commitment fees	$ 0.6	$ 0.6	$ 1.1	$ 1.1
Line of credit remaining borrowing capacity	$ 442.3		$ 442.3

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Long-Term Debt - Debt Ratios (Details) - Revolving Credit Facility	6 Months Ended		12 Months Ended	21 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Mar. 30, 2022
Line of Credit Facility
EBITDA to total interest expenses ratio		2.5
Senior secured debt to EBITDA ratio		3.5
Forecasted
Line of Credit Facility
Total debt to EBITDA ratio	5.5		5.75	5.25
Forecasted | Conditional Event
Line of Credit Facility
Total debt to EBITDA ratio				5.5

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Long-Term Debt - Notes (Details) - USD ($)		6 Months Ended
	Mar. 21, 2019	Jun. 30, 2019	Jun. 30, 2018
Long-Term Debt
Proceeds from borrowings of long-term debt		$ 1,254,000,000	$ 272,830,000
Senior Notes | 2027 Notes
Long-Term Debt
Debt instrument face amount	$ 500,000,000.0
Interest rate (as a percent)	6.875%
Proceeds from borrowings of long-term debt	$ 491,200,000
Debt issuance cost	$ 8,800,000

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Long-Term Debt - Redemption of the 2021 Notes (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Apr. 05, 2019	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Long-Term Debt
Repayments of long-term debt			$ 1,151,000	$ 176,636
Loss on the extinguishment of debt		$ 3,653	3,653	$ 0
Senior Notes | 2021 Notes
Long-Term Debt
Redemption rate (percent)	100.00%
Repayments of long-term debt	$ 350,000
interest paid	$ 200
Loss on the extinguishment of debt		$ 3,700	$ 3,700

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Revenue from Contracts with Customers - Disaggregate Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue
Contract revenue	$ 169,384	$ 150,866	$ 335,103	$ 297,868
Transferred at point in time
Disaggregation of Revenue
Contract revenue	2,100	1,400	4,200	2,500
0 - 1,000 horsepower per unit
Disaggregation of Revenue
Contract revenue	57,826	54,389	115,987	108,816
1,001 - 1,500 horsepower per unit
Disaggregation of Revenue
Contract revenue	69,546	63,390	137,753	124,084
Over 1,500 horsepower per unit
Disaggregation of Revenue
Contract revenue	41,684	32,465	80,709	63,900
Other
Disaggregation of Revenue
Contract revenue	$ 328	$ 622	$ 654	$ 1,068

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Revenue from Contracts with Customers - Remaining Performance Obligation (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 288,975
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 134,148
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 109,586
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
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]
Remaining performance obligations	$ 35,531
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 8,295
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 1,122
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligations	$ 293
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied, expected timing	1 year

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Revenue from Contracts with Customers - Contract with Client (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Disaggregation of Revenue
Net receivables	$ 84,003		$ 80,606
Contract liability with customer	9,400		9,700
Deferred revenue recognized in earnings	9,385	$ 5,403
Contracts with customer
Disaggregation of Revenue
Net receivables	$ 82,100		$ 78,600

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Derivatives - Interest Rate Risk (Details) - Derivatives designated as hedging instruments $ in Millions	Jun. 30, 2019 USD ($)
Interest rate swaps
Accounting for Derivatives
Notional amount of interest rate swaps	$ 400
May 2020
Accounting for Derivatives
Notional amount of interest rate swaps	100
March 2022
Accounting for Derivatives
Notional amount of interest rate swaps	$ 300

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Derivatives - Interest Rate Risk (Narratives) (Details) - Derivatives designated as hedging instruments - Interest rate swaps $ in Millions	Jun. 30, 2019 USD ($)
Accounting for Derivatives
Deferred gain to be reclassified during next 12 months	$ 0.3
Weighted average effective fixed interest rate on interest rate swaps (as a percent)	1.80%

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Derivatives - Effect on Derivative Instruments on the Balance Sheet (Details) - Derivatives designated as hedging instruments - Interest rate swaps - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounting for Derivatives
Derivative asset	$ 336	$ 7,307
Interest rate swaps liability	(1,574)	0
Derivative asset
Accounting for Derivatives
Derivative asset	336	3,185
Other assets
Accounting for Derivatives
Derivative asset	$ 0	$ 4,122

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Derivatives - Effect on Derivative Instruments on the Income Statement (Details) - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Effect of derivative instruments on results of operations
Pre-tax gain (loss) recognized in other comprehensive income (loss)	$ (4,529)	$ 2,245	$ (6,828)	$ 6,941
Interest expense, net
Effect of derivative instruments on results of operations
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense, net	$ 791	$ 6	$ 1,717	$ (449)

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Derivatives - Derivative Gain (Loss) Recognized in Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Effect of derivative instruments on results of operations
Interest expense, net	$ 25,720	$ 22,542	$ 49,148	$ 44,151
Accumulated Other Comprehensive Income (Loss) | Reclassification out of Accumulated Other Comprehensive Income
Effect of derivative instruments on results of operations
Interest expense, net	$ (791)	$ (207)	$ (1,717)	$ (153)

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring basis - Level 2 - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair value measurements
Interest rate swaps asset	$ 336	$ 7,307
Interest rate swaps liability	$ (1,574)	$ 0

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Fair Value Measurements (Narratives) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Nonrecurring basis | Level 3
Fair value measurements
Impaired long-lived assets	$ 0.8	$ 1.0
Impaired long-lived assets
Fair value measurements
Weighted average disposal period used in estimation of the fair value of the impaired long-lived assets	4 years

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Fair Value Measurements - Fair Value of Debt (Details) - Fixed Rate Debt - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt	$ 836,314	$ 690,001
Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt	$ 881,000	$ 674,000

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Long-Lived Asset Impairment (Details) hp in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) compressor_unit hp	Jun. 30, 2018 USD ($) compressor_unit hp	Jun. 30, 2019 USD ($) compressor_unit hp	Jun. 30, 2018 USD ($) compressor_unit hp
Long-lived asset impairment
Impairment recorded on idle compressor units retired from the active fleet	$ 3,621	$ 3,846	$ 6,305	$ 6,912
Idle compressor units
Long-lived asset impairment
Idle compressor units retired from the active fleet (compressors) | compressor_unit	75	70	90	105
Horsepower of idle compressor units retired from the active fleet (horsepower) | hp	19	17	32	30
Impairment recorded on idle compressor units retired from the active fleet	$ 3,621	$ 3,846	$ 6,305	$ 6,912

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Income Taxes (Narratives) (Details) $ in Millions	Jun. 30, 2019 USD ($)
Income Tax Disclosure [Abstract]
Potential decrease in unrecognized tax benefit	$ 1.2

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Partners' Capital (Narratives) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Jul. 29, 2019	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Partners' Equity, Allocations and Cash Distributions
Ownership interest held by public unitholders in the reporting entity (as a percent)		57.00%
Common units owned (in units)			70,231,036		70,231,036		70,231,036
General partner units, equivalent units outstanding (in units)			1,422,458		1,422,458		1,422,458
Distribution per common unit (in dollars per unit)			$ 0.240	$ 0.221	$ 0.480	$ 0.506
Subsequent Events
Partners' Equity, Allocations and Cash Distributions
Distribution per common unit (in dollars per unit)	$ 0.3075
Authorized distributions to limited partnership, amount	$ 22.0
Archrock
Partners' Equity, Allocations and Cash Distributions
Common units owned (in units)		29,064,637
General partner units, equivalent units outstanding (in units)		1,422,458
Archrock | Archrock Partners, L.P
Partners' Equity, Allocations and Cash Distributions
General partner's ownership interest in partnership (as a percent)		43.00%

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Commitments and Contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Accrual for income tax liability	$ 3.2	$ 3.2

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Label	Element	Value
Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 12,714,000
Accounting Standards Update 2014-09 [Member] | Limited Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	12,462,000
Accounting Standards Update 2014-09 [Member] | General Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	252,000
Accounting Standards Update 2017-12 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	383,000
Accounting Standards Update 2017-12 [Member] | Limited Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	375,000
Accounting Standards Update 2017-12 [Member] | General Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 8,000