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Equity - Narratives (Details) $ / shares in Units, hp in Thousands, $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Jan. 25, 2019 $ / shares | Apr. 26, 2018 USD ($) shares | Apr. 25, 2018 | Aug. 31, 2017 USD ($) shares | Nov. 30, 2016 USD ($) customer hp compressor_unit shares | Mar. 31, 2016 USD ($) customer shares | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage held by reporting entity |  |  | 57.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets net |  | $ 52,200 |  |  |  |  | $ 51,953 |  |  |  | $ 65,238 |  |  |  | $ 51,953 | $ 65,238 |
Deferred tax asset valuation allowances |  | 50,800 |  |  |  |  | 45,439 |  |  |  | 300 |  |  |  | 45,439 | 300 |
Adjustments to additional paid in capital, deferred tax asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 105,200 |  |
Merger-related costs |  |  |  |  |  |  | $ 169 | $ 182 | $ 5,686 | $ 4,125 | $ 275 | $ 0 | $ 0 | $ 0 | 10,162 | 275 | $ 0
Net proceeds from sale of partnership units, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49,726 |
Payment for business acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 13,779
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared (usd per share) | $ / shares | $ 0.132 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Limited Partner Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (shares) | shares |  |  |  | 4,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, value |  |  |  | $ 60,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Limited Partner Units | Parent Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of partnership units, net of tax |  |  |  | $ 1,300 |  |  |  |  |  |  |  |  |  |  |  |  |
General partner units interest (as a percentage) |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |
General Partner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital accounts (units) | shares |  |  |  | 93,163 |  |  |  |  |  |  |  |  |  |  |  |  |
Over-Allotment | Limited Partner Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (shares) | shares |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Archrock | Archrock, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest percentage |  |  | 43.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership Merger |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets acquired |  | $ 156,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership Merger | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, shares issued (shares) | shares |  | 57,600,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, shares acquired (shares) | shares |  | 41,200,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share conversion rate (per share) |  | 1.40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares used as consideration |  | $ 625,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2016 Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of customers | customer |  |  |  |  | 63 |  |  |  |  |  |  |  |  |  |  |  |
Number of compressor units | compressor_unit |  |  |  |  | 262 |  |  |  |  |  |  |  |  |  |  |  |
Compressor units horsepower | hp |  |  |  |  | 147 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of horsepower in fleet |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |
Payment for business acquisition |  |  |  |  | $ 85,000 |  |  |  |  |  |  |  |  |  |  |  |
November 2016 Acquisition | General Partner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital accounts (units) | shares |  |  |  |  | 111,040 |  |  |  |  |  |  |  |  |  |  |  |
November 2016 Acquisition | Common Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, units distributed in acquisition (units) | shares |  |  |  |  | 5,500,000 |  |  |  |  |  |  |  |  |  |  |  |
March 2016 Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Merger-related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200
Number of customers | customer |  |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |
Payment for business acquisition |  |  |  |  |  | $ 18,800 |  |  |  |  |  |  |  |  |  |  |
March 2016 Acquisition | Limited Partner Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, units distributed in acquisition (units) | shares |  |  |  |  |  | 257,000 |  |  |  |  |  |  |  |  |  |  |
Partners' capital account acquisition, value |  |  |  |  |  | $ 1,800 |  |  |  |  |  |  |  |  |  |  |
March 2016 Acquisition | General Partner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General partner units interest (as a percentage) |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, units distributed in acquisition (units) | shares |  |  |  |  |  | 5,205 |  |  |  |  |  |  |  |  |  |  |

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