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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit | Noncontrolling Interest | Cumulative Effect, Period of Adoption, Adjustment | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Stockholders' Equity, Beginning balance (ASC 606 Revenue) at Dec. 31, 2017 |  |  |  |  |  | $ 14,666 |  |  | $ 14,666 |
Stockholders' Equity, Beginning balance (ASU 2017-12) at Dec. 31, 2017 |  |  |  |  |  | 383 |  |  | $ 383 |
Stockholders' Equity, Beginning balance (ASU 2018-02) at Dec. 31, 2017 |  |  | $ 258 |  |  | (258) |  |  |  |
Stockholders' Equity, Beginning balance at Dec. 31, 2017 | $ 769 | $ 3,093,058 |  | $ 1,197 | $ (76,732) |  | $ (2,241,243) | $ (41,431) |  | $ 735,618
Stockholders' Equity, Beginning, shares at Dec. 31, 2017 | 76,880,862 |  |  |  | (5,930,380) |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | $ (1,759) |  |  |  |  | $ (1,759)
Treasury stock purchased, shares |  |  |  |  | (167,382) |  |  |  |  | (167,382)
Cash dividends |  |  |  |  |  |  | (58,288) |  |  | $ (58,288)
Shares issued in ESPP | $ 1 | 802 |  |  |  |  |  |  |  | 803
Shares issued in ESPP, shares | 93,617 |  |  |  |  |  |  |  |  |
Stock-based compensation, net of forfeitures | $ 10 | 7,192 |  |  |  |  |  | (64) |  | 7,138
Stock-based compensation, net of forfeitures, shares | 960,028 |  |  |  | (141,121) |  |  |  |  |
Stock options exercised | $ 2 | 1,341 |  |  | $ (1,371) |  |  |  |  | (28)
Stock options exercised, shares | 218,997 |  |  |  | (142,722) |  |  |  |  |
Contribution from Exterran Corporation |  | 18,744 |  |  |  |  |  |  |  | 18,744
Cash distribution to noncontrolling unitholders of the Partnership |  |  |  |  |  |  |  | (11,766) |  | (11,766)
Merger-related adjustments/Shares issued for acquisition | $ 576 | 56,845 |  |  |  |  |  | 40,901 |  | 98,322
Merger-related adjustments/Shares issued for acquisition, shares | 57,634,005 |  |  |  |  |  |  |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  | 21,063 | 8,097 |  | 29,160
Interest rate swap gain (loss), net of reclassifications to earnings |  |  |  | (1,582) |  |  |  | $ 4,263 |  | 2,681
Amortization of terminated interest rate swaps |  |  |  | 230 |  |  |  |  |  | 230
Adjustments for changes in ownership of Partnership |  |  |  | 5,670 |  |  |  |  |  | 5,670
Stockholders' Equity, Ending balance at Dec. 31, 2018 | $ 1,358 | 3,177,982 |  | 5,773 | $ (79,862) |  | (2,263,677) |  |  | 841,574
Stockholders' Equity, Ending, shares at Dec. 31, 2018 | 135,787,509 |  |  |  | (6,381,605) |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | $ (2,007) |  |  |  |  | $ (2,007)
Treasury stock purchased, shares |  |  |  |  | (212,080) |  |  |  |  | (212,080)
Cash dividends |  |  |  |  |  |  | (78,530) |  |  | $ (78,530)
Shares issued in ESPP | $ 1 | 770 |  |  |  |  |  |  |  | 771
Shares issued in ESPP, shares | 87,933 |  |  |  |  |  |  |  |  |
Stock-based compensation, net of forfeitures | $ 11 | 8,094 |  |  |  |  |  |  |  | $ 8,105
Stock-based compensation, net of forfeitures, shares | 1,104,793 |  |  |  | (108,917) |  |  |  |  |
Stock options exercised, shares |  |  |  |  |  |  |  |  |  | 0
Merger-related adjustments/Shares issued for acquisition | $ 217 | 225,663 |  |  |  |  |  |  |  | $ 225,880
Merger-related adjustments/Shares issued for acquisition, shares | 21,656,683 |  |  |  |  |  |  |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  | 97,330 |  |  | 97,330
Interest rate swap gain (loss), net of reclassifications to earnings |  |  |  | (7,160) |  |  |  |  |  | (7,160)
Accounting Standards Update [Extensible List] |  |  |  |  |  |  |  |  | Accounting Standards Update201613 [Member] |
Stockholders' Equity, Ending balance at Dec. 31, 2019 | $ 1,587 | 3,412,509 |  | (1,387) | $ (81,869) | $ 166 | (2,244,877) |  | $ 166 | 1,085,963
Stockholders' Equity, Ending, shares at Dec. 31, 2019 | 158,636,918 |  |  |  | (6,702,602) |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | $ (1,804) |  |  |  |  | $ (1,804)
Treasury stock purchased, shares |  |  |  |  | (236,752) |  |  |  |  | (236,752)
Cash dividends |  |  |  |  |  |  | (88,832) |  |  | $ (88,832)
Shares issued in ESPP | $ 2 | 681 |  |  |  |  |  |  |  | 683
Shares issued in ESPP, shares | 171,563 |  |  |  |  |  |  |  |  |
Stock-based compensation, net of forfeitures | $ 11 | 10,756 |  |  |  |  |  |  |  | $ 10,767
Stock-based compensation, net of forfeitures, shares | 1,206,479 |  |  |  | (113,415) |  |  |  |  |
Stock options exercised, shares |  |  |  |  |  |  |  |  |  | 0
Contribution from Exterran Corporation |  | 678 |  |  |  |  |  |  |  | $ 678
Comprehensive income (loss) |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  | (68,445) |  |  | (68,445)
Interest rate swap gain (loss), net of reclassifications to earnings |  |  |  | (3,619) |  |  |  |  |  | (3,619)
Stockholders' Equity, Ending balance at Dec. 31, 2020 | $ 1,600 | $ 3,424,624 |  | $ (5,006) | $ (83,673) |  | $ (2,401,988) |  |  | $ 935,557
Stockholders' Equity, Ending, shares at Dec. 31, 2020 | 160,014,960 |  |  |  | (7,052,769) |  |  |  |  |

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