Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands, shares in Millions	1 Months Ended		12 Months Ended
	Apr. 30, 2015	Nov. 30, 2014	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Composition Of Deferred Tax Assets And Liabilities [Line Items]
Effective income tax rate reconciliation, at federal statutory income Tax Rate, percent				35.00%
Tax cuts and jobs act of 2017, incomplete accounting, change in tax rate, deferred tax assets and liability, provisional income tax (Expense) benefit				$ 132,100
Tax cuts and jobs act of 2017 incomplete accounting change in tax rate deferred tax assets and liabilities valuation allowance				3,600
Tax cuts and jobs act of 2017 incomplete accounting change in tax rate deferred tax liabilities fixed assets				117,500
Tax cuts and jobs act of 2017 incomplete accounting change in tax rate deferred tax liabilities trademarks				22,800
Liability, Provisional Income Tax (Expense) Benefit				26,100	$ 26,100
Valuation allowance of deferred tax assets				5,470	9,116
Tax cuts and jobs act of 2017 incomplete accounting change in tax rate deferred tax assets Provisional income Tax (expense) benefit resulting from remeasurment of net operating loss carryforwards				3,600
Minimum tax credit carry forwards				$ 9,400	8,600
Excess of tax credit carryforward refundable percentage				50.00%
Unrecognized tax benefits				$ 2,990	$ 2,990	$ 2,990
Scenario Forecast [Member]
Composition Of Deferred Tax Assets And Liabilities [Line Items]
Effective income tax rate reconciliation, at federal statutory income Tax Rate, percent			21.00%
Blackstone [Member]
Composition Of Deferred Tax Assets And Liabilities [Line Items]
Percentage of common shares outstanding		45.20%		30.00%
Blackstone [Member] | Secondary Offering [Member]
Composition Of Deferred Tax Assets And Liabilities [Line Items]
Common stock shares, issued and sold	23.9	23.0