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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands | Total | Common Stock | Warrants | Additional Paid-In Capital | Accumulated Deficit
--- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2017 |  | 35,650,000 | 6,570,000 |  |
Beginning balance at Dec. 31, 2017 | $ 839,940 | $ 36 | $ 88,500 | $ 1,038,324 | $ (286,920)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Cancellation of stock awards, net of issuances |  | (90,000) |  |  |
Stock-based compensation | 16,055 |  |  | 16,055 |
Cash paid for tax withholdings on vested stock awards | (1,661) |  |  | (1,661) |
Net loss | (40,894) |  |  |  | (40,894)
Ending balance (in shares) at Mar. 31, 2018 |  | 35,560,000 | 6,570,000 |  |
Ending balance at Mar. 31, 2018 | $ 813,440 | $ 36 | $ 88,500 | 1,052,718 | (327,814)
Beginning balance (in shares) at Dec. 31, 2018 | 35,687,000 | 35,687,000 | 6,604,000 |  |
Beginning balance at Dec. 31, 2018 | $ 847,721 | $ 36 | $ 88,516 | 1,055,164 | (295,995)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Stock-based compensation | 1,073 |  |  | 1,073 |
Issuance of warrants for general unsecured claims (in shares) |  |  | 1,000 |  |
Issuance of warrants for general unsecured claims |  |  | $ 2 | (2) |
Net loss | $ (5,277) |  |  |  | (5,277)
Ending balance (in shares) at Mar. 31, 2019 | 35,687,000 | 35,687,000 | 6,605,000 |  |
Ending balance at Mar. 31, 2019 | $ 843,460 | $ 36 | $ 88,518 | $ 1,056,235 | $ (301,329)

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