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Equity - Merger Transaction (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2018 USD ($) shares | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets net |  | $ 173,146 |  |  |  | $ 131,521 |  |  |  |  |  |  |  | $ 173,146 | $ 131,521 |
Deferred tax asset valuation allowances |  | 1,027 |  |  |  | 822 |  |  |  |  |  |  |  | 1,027 | 822 |
Merger-related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,213 | $ 10,162
Dividends paid to Archrock stockholders |  | $ 22,177 | $ 22,308 | $ 22,176 | $ 22,171 | $ 22,031 | $ 22,062 | $ 17,206 | $ 17,231 | $ 17,156 | $ 17,114 | $ 15,486 | $ 8,532 | $ 88,832 | $ 78,530 | $ 58,288
Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  |  |  |  |  |  |  | 43.00% |  |  |
Public Unitholders | Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  |  |  |  |  |  |  | 57.00% |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,656,683 | 57,634,005
Merger Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of gain (loss) from merger | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets resulting from merger | 156,000 |  |  |  |  |  |  |  |  | 156,000 |  |  |  |  |  | $ 156,000
Deferred tax assets net | 52,200 |  |  |  |  |  |  |  |  | 52,200 |  |  |  |  |  | 52,200
Deferred tax asset valuation allowances | 50,800 |  |  |  |  |  |  |  |  | $ 50,800 |  |  |  |  |  | 50,800
Adjustments to additional paid in capital, deferred tax asset | $ 105,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Merger-related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500 | $ 10,200
Merger Transaction | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (in shares) | shares | 57,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Merger Transaction | Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, shares acquired (shares) | shares | 41,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of equity consideration | $ 625,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Merger Transaction | Partnership | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share conversion rate (per share) | 1.40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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