Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Oct. 27, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	May 09, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amortization of original issue discount on long-term debt			$ 7,349	$ 21,745	$ 31,455
Write-off of deferred financing costs	$ 9,300
Senior Secured Term Loan
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Write-off of deferred financing costs		$ 2,100	1,700
Operating Segments | Entertainment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Sell price of business						$ 349,100
Pre-tax gain on sale of Entertainment segment			104,100
Transaction costs			7,800
Additional interest expense			12,900	20,400	$ 6,500
Prepayment premium			31,554
Write-off of original issue discount			6,700
Operating Segments | Entertainment | Senior Secured Term Loan
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amortization of original issue discount on long-term debt			1,700	$ 2,200
Prepayment premium			15,200
Prepayment penalty			300
Write-off of deferred financing costs			9,400
Write-off of original issue discount			4,700
Operating Segments | Entertainment | Senior Secured Notes
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Write-off of original issue discount			$ 2,000