Fresh Start Accounting - Schedule of Cumulative Net Impact of Effects on Accumulated Deficit (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Apr. 23, 2021	Dec. 31, 2020
Reorganization, Chapter 11 [Line Items]
Change in accumulated deficit	$ (177,344)		$ 157,297
Reorganization Adjustments
Reorganization, Chapter 11 [Line Items]
Pre-tax gain on settlement of liabilities subject to compromise		$ 1,129,892
Reorganization Adjustments | Reorganization, Chapter 11, Predecessor, before Adjustment
Reorganization, Chapter 11 [Line Items]
Success fee recognized on the Effective Date		(17,120)
Pre-tax gain on settlement of liabilities subject to compromise		1,129,892
Backstop commitment expense to record difference between accrued termination fee and issuance of payment-in-kind First Lien Notes upon emergence		(524)
Write-off of Predecessor directors and officers tail insurance policy		(6,932)
Other emergence effects		(137)
Expense related to bonus accrual under BOP services agreement		(831)
Cancellation of Predecessor common stock, additional paid-in capital and treasury stock		1,825,268
Issuance of Emergence Warrants to Predecessor equity holders		(20,574)
Change in deferred tax as a result of step plan adjustments		(3,869)
Change in accumulated deficit		$ 2,905,173