Income Taxes - Income Tax Expense Computed by Applying the Statutory Federal Rate (Detail)	1 Months Ended	11 Months Ended	12 Months Ended
Dec. 31, 2016	Dec. 15, 2016	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Income tax benefit computed at Federal statutory rate	35.00%		21.00%	35.00%
State taxes	0.00%		(0.20%)	0.00%
Meals and entertainment	0.00%		(0.40%)	(0.40%)
Foreign rate difference	0.00%		0.00%	0.40%
Non-deductible goodwill and asset impairments	0.00%		0.00%	0.00%
Non-deductible bankruptcy costs	0.00%		0.00%	0.00%
Non-taxable cancellation of debt income	0.00%		2.60%	0.00%
Penalties and other non-deductible expenses	0.00%		0.00%	0.00%
Sale of Mexico	0.00%		0.00%	0.00%
Change in valuation allowance	(35.00%)		(20.10%)	(33.80%)
Equity compensation	0.00%		(0.70%)	(1.00%)
U.S. tax reform - impact to deferred tax assets and liabilities	0.00%		0.00%	(67.40%)
U.S. tax reform - change in valuation allowance	0.00%		0.00%	67.40%
Other	0.00%		0.00%	1.20%
Effective income tax rate	0.00%		2.20%	1.40%
Predecessor [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Income tax benefit computed at Federal statutory rate		35.00%
State taxes		(9.10%)
Meals and entertainment		(0.30%)
Foreign rate difference		(0.30%)
Non-deductible goodwill and asset impairments		(4.00%)
Non-deductible bankruptcy costs		(15.70%)
Non-taxable cancellation of debt income		154.60%
Penalties and other non-deductible expenses		(2.30%)
Sale of Mexico		16.50%
Change in valuation allowance		(171.10%)
Equity compensation		0.00%
U.S. tax reform - impact to deferred tax assets and liabilities		0.00%
U.S. tax reform - change in valuation allowance		0.00%
Other		(5.50%)
Effective income tax rate		(2.20%)

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Effective Income Tax Rate Reconciliation, Non-Deductible Bankruptcy Costs, Percent

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Effective Tax Rate, Penalties and Other Non-Deductible Expenses

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[Line Items] for Schedule Of Effective Income Tax Rate Reconciliation [Table]

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to disposition of asset. Includes, but is not limited to, intra-entity transfer of asset other than inventory.

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