Debt - Summary of Debt and Capital Lease Obligations (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total Debt	$ 1,469,582	$ 1,341,555
Less amounts due within one year	(6,019)	(377)
Total long-term debt	1,463,563	1,341,178
$400 Million Term Loan B [Member]
Debt Instrument [Line Items]
Total Debt	395,000	398,000
$350 Million Senior Notes at 5% Interest [Member]
Debt Instrument [Line Items]
Total Debt	350,000	350,000
$400 Million 5% Senior Notes [Member]
Debt Instrument [Line Items]
Total Debt	400,000
AC Hotel Notes Payable [Member]
Debt Instrument [Line Items]
Total Debt	6,000	6,000
Credit Facility [Member]
Debt Instrument [Line Items]
Total Debt	317,900	586,500
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Total Debt	$ 682	$ 1,055