Transactions with Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Receivables, net	$ 151,672		$ 151,672		$ 107,336
Joint Venture Partner
Related Party Transaction [Line Items]
Fees earned and payroll costs reimbursed from marketing services arrangement	500	$ 400	1,300	$ 600
Member of Unconsolidated Joint Venture
Related Party Transaction [Line Items]
Royalty and marketing and reservation system fees	7,200	5,400	16,100	12,600
Receivables, net	1,600		1,600		$ 1,100
Commissions paid to travel agent	$ 66	$ 56	$ 133	$ 146