Marketing and Reservation Activities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Advances, Marketing and Reservation Activities [Line Items]
Depreciation and amortization	$ 3,108	$ 2,293	$ 8,793	$ 6,903
Interest expense	10,821	10,495	32,057	31,376
Marketing And Reservation Fees [Member]
Advances, Marketing and Reservation Activities [Line Items]
Depreciation and amortization	5,800	4,400	17,000	12,400
Interest expense	6	$ 500	22	$ 1,500
Other Long-term Liabilities [Member]
Advances, Marketing and Reservation Activities [Line Items]
Advances, marketing and reservation activities	$ 44,100		$ 44,100		$ 44,300