Income Taxes - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jul. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Nov. 15, 2018
Income Tax [Line Items]
Federal statutory tax rate		21.00%		35.00%
Net deferred liabilities					$ 1,000,000
Cancellation of indebtedness (COD) income	$ 853,000,000
Total amount of reduction of tax attributes	718,000,000
Net operating losses and depreciable assets	358,000,000
Attribute reduction in stock of foreign subsidiaries	330,000,000
Excess COD income attributed to subsidiaries	122,000,000
Deferred tax recognized on excess COD income	14,000,000
Valuation allowance		$ 106,447,000	$ 43,218,000
Unrecognized deferred tax liability for temporary differences related to investments in foreign subsidiaries estimated amount		5,000,000	4,000,000
Income tax penalties and interest		21,600,000	9,800,000
Recognized provisional deemed dividend			43,200,000
Reduction in net deferred tax asset		27,300,000
Net impact in income loss		0
Global intangible low taxed income recognized		$ 0
Internal Revenue Service (IRS)
Income Tax [Line Items]
Balance sheet components restated from amount previously reported to reflect uncertain tax position			13,400,000
Predecessor | Internal Revenue Service (IRS)
Income Tax [Line Items]
Cumulative impact of error on income inclusion as prior period adjustment to retained earnings			13,400,000
Scenario Plan
Income Tax [Line Items]
Federal statutory tax rate		21.00%
Federal NOL
Income Tax [Line Items]
Net operating loss carryforwards		$ 225,000,000
Foreign NOL
Income Tax [Line Items]
Net operating loss carryforwards		124,000,000
Tax credit		$ 13,000,000	2,000,000
Tax credit year expire, start year		2022
Tax credit year expire, end year		2027
Net operating loss carry forwards expiration period		2025
Tax credit		$ 374,000,000
Domestic Subsidiaries
Income Tax [Line Items]
Excess COD income attributed to subsidiaries	136,000,000
Deferred tax recognized on excess COD income	$ 0
Intercompany Vessel Sales
Income Tax [Line Items]
Remaining unamortized amount			$ 0