Receivable - Marketing And Reservation Fees (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Receivable - marketing and reservation fees	$ 64,838		$ 64,838		$ 54,014
Depreciation and amortization	1,977	1,948	3,994	3,903
Interest expense	3,540	3,267	6,657	6,491
Marketing And Reservation Fees [Member]
Depreciation and amortization	3,500	3,300	7,000	6,500
Interest expense	1,000	1,000	2,200	2,000
Cumulative Marketing Expenses In Excess Of Cumulative Marketing Fee Revenues [Member]
Receivable - marketing and reservation fees	25,300		25,300		18,500
Cumulative Reservation Expenses In Excess Of Cumulative Reservation Fee Revenues [Member]
Receivable - marketing and reservation fees	$ 39,500		$ 39,500		$ 35,500