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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Total
--- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Predecessor
Balances at Dec. 31, 2017 | $ 15 | $ 1,016,281 | $ 55,702 | $ 1,071,998
Balances (in shares) at Dec. 31, 2017 | 149,379 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Net income (loss) |  |  | 45,959 | 45,959
Common stock issuance | $ 1 | 63,479 |  | 63,480
Common stock issuance (in shares) | 9,200 |  |  |
Equity issuance costs |  | (3,044) |  | (3,044)
Stock option exercises |  | 323 |  | 323
Stock option exercises (in shares) | 42 |  |  |
Long-term incentive plan grants (in shares) | 2,327 |  |  |
Long-term incentive plan forfeitures (in shares) | (262) |  |  |
Reduction in shares to cover individuals' tax withholding |  | (301) |  | (301)
Reduction in shares to cover individuals' tax withholding (in shares) | (73) |  |  |
Stock-based compensation |  | 18,629 |  | 18,629
Balances at Dec. 31, 2018 | $ 16 | 1,095,367 | 101,661 | $ 1,197,044
Balances (in shares) at Dec. 31, 2018 | 160,613 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Predecessor
Balances at Sep. 30, 2019 | $ 16 | 1,084,853 | (1,054,392) | $ 30,477
Balances (in shares) at Sep. 30, 2019 | 161,502 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Predecessor
Balances at Dec. 31, 2018 | $ 16 | 1,095,367 | 101,661 | $ 1,197,044
Balances (in shares) at Dec. 31, 2018 | 160,613 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Net income (loss) |  |  | (1,156,053) | (1,156,053)
Common stock issuance | $ 2 | 322,294 |  | 322,296
Common stock issuance (in shares) | 16,204 |  |  |
Equity issuance costs |  | (2,503) |  | (2,503)
Long-term incentive plan grants (in shares) | 4,164 |  |  |
Long-term incentive plan forfeitures (in shares) | (2,101) |  |  |
Reduction in shares to cover individuals' tax withholding |  | (494) |  | (494)
Reduction in shares to cover individuals' tax withholding (in shares) | (1,174) |  |  |
Stock-based compensation |  | (10,020) |  | (10,020)
Cancellation of Predecessor equity | $ (16) | (1,084,853) | 1,054,392 | (30,477)
Cancellation of Predecessor equity (in shares) | (161,502) |  |  |
Warrants issued |  | 7,336 |  | 7,336
Balances at Oct. 01, 2019 |  |  |  | $ 148,431
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Successor
Balances at Dec. 31, 2018 | $ 16 | 1,095,367 | 101,661 | $ 1,197,044
Balances (in shares) at Dec. 31, 2018 | 160,613 |  |  |
Balances at Dec. 31, 2019 | $ 2 | 327,108 | (10,460) | $ 316,650
Balances (in shares) at Dec. 31, 2019 | 16,204 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Predecessor
Balances at Sep. 30, 2019 | $ 16 | 1,084,853 | (1,054,392) | $ 30,477
Balances (in shares) at Sep. 30, 2019 | 161,502 |  |  |
Balances at Oct. 01, 2019 |  |  |  | 148,431
Increase (Decrease) in Stockholders' Equity |  |  |  |
Equity issuance costs |  |  |  | (2,503)
Balances at Oct. 02, 2019 | $ 2 | 327,127 |  | 327,129
Balances (in shares) at Oct. 02, 2019 | 16,204 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Fair value of equity issued to Predecessor common stockholders |  |  |  | $ 319,793
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Successor
Balances at Oct. 01, 2019 |  |  |  | $ 148,431
Increase (Decrease) in Stockholders' Equity |  |  |  |
Net income (loss) |  |  | (10,460) | (10,460)
Equity issuance costs |  | (19) |  | (19)
Balances at Dec. 31, 2019 | $ 2 | 327,108 | (10,460) | $ 316,650
Balances (in shares) at Dec. 31, 2019 | 16,204 |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  | Successor
Net income (loss) |  |  | (229,707) | $ (229,707)
Equity issuance costs |  | (14) |  | (14)
Stock-based compensation |  | 3,029 |  | 3,029
Balances at Dec. 31, 2020 | $ 2 | $ 330,123 | $ (240,167) | $ 89,958
Balances (in shares) at Dec. 31, 2020 | 16,204 |  |  |

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