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Income Taxes - Reconciliation of (Benefit) Provision for Income Taxes at Statutory Federal Tax Rate to Company's Actual Income Tax (Benefit) Provision (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Oct. 01, 2016 | Dec. 31, 2018 | Dec. 31, 2017
Successor |  |  |  |
Reconciliation Of Provision Of Income Taxes [Line Items] |  |  |  |
Computed at federal statutory rate | $ (116,891) |  | $ (1,921) | $ 13,409
State taxes, net of federal benefit | (3,696) |  | 119 | (284)
Non-deductible expenses | 144 |  | 849 | 1,711
Non-deductible debt costs | 0 |  | 0 | 0
Stock-based compensation | 306 |  | 1,874 | 1,109
Discharge of debt and other reorganization related items | 0 |  | 206 | 1,018
Return to provision adjustments | 0 |  | (1,292) | 341,681
Impact of legislative changes | 0 |  | 0 | 243,801
Release of valuation allowance | 0 |  | 0 | (8,719)
Change in valuation allowance | 120,144 |  | 132 | (602,452)
Other | 2 |  | (38) | (23)
Total (benefit) provision | $ 9 |  | $ (71) | $ (8,749)
Predecessor |  |  |  |
Reconciliation Of Provision Of Income Taxes [Line Items] |  |  |  |
Computed at federal statutory rate |  | $ 504,283 |  |
State taxes, net of federal benefit |  | 10,512 |  |
Non-deductible expenses |  | 462 |  |
Non-deductible debt costs |  | 22,694 |  |
Stock-based compensation |  | 5,884 |  |
Discharge of debt and other reorganization related items |  | 359,278 |  |
Return to provision adjustments |  | 0 |  |
Impact of legislative changes |  | 0 |  |
Release of valuation allowance |  | 0 |  |
Change in valuation allowance |  | (903,102) |  |
Other |  | 0 |  |
Total (benefit) provision |  | $ 11 |  |

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