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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Accumulated Deficit | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2015 | $ 787,259 | $ 750 | $ 2,944,897 | $ (1,570) | $ (72,429) | $ (2,137,738) | $ 53,349
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (739) |  |  |  | (739) |  |
Cash dividends | (13,052) |  |  |  |  | (13,052) |
Stock-based compensation, net of forfeitures | 3,531 | 12 | 3,113 |  |  |  | 406
Income tax expense from stock-based compensation expense | (1,062) |  | (1,062) |  |  |  |
Contribution from Exterran Corporation | 5,153 |  | 5,153 |  |  |  |
Partnership units issued in March 2016 Acquisition | 1,484 |  | 600 |  |  |  | 884
Cash distribution to noncontrolling unitholders of the Partnership | (20,737) |  |  |  |  |  | (20,737)
Comprehensive income (loss) | (10,917) |  |  | (1,405) |  | (1,819) | (7,693)
Ending balance at Mar. 31, 2016 | 750,920 | 762 | 2,952,701 | (2,975) | (73,168) | (2,152,609) | 26,209
Beginning balance at Dec. 31, 2016 | 684,928 | 762 | 3,021,040 | (1,678) | (73,944) | (2,227,214) | (34,038)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (2,180) |  |  |  | (2,180) |  |
Cash dividends | (8,458) |  |  |  |  | (8,458) |
Stock-based compensation, net of forfeitures | 2,089 | 5 | 2,147 |  |  |  | (63)
Stock options exercised | 939 | 1 | 938 |  |  |  |
Contribution from Exterran Corporation | 19,709 |  | 19,709 |  |  |  |
Cash distribution to noncontrolling unitholders of the Partnership | (10,446) |  |  |  |  |  | (10,446)
Comprehensive income (loss) | (12,573) |  |  | 549 |  | (11,685) | (1,437)
Impact of adoption of Accounting Standards Update (ASU) 2016-09 | 1,290 |  | 209 |  |  | 1,081 |
Ending balance at Mar. 31, 2017 | $ 675,298 | $ 768 | $ 3,044,043 | $ (1,129) | $ (76,124) | $ (2,246,276) | $ (45,984)

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