Receivable - Marketing And Reservation Fees (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Receivable - marketing and reservation fees	$ 54,014	$ 42,507
Depreciation and amortization	8,024	8,342	8,336
Interest expense	12,939	6,680	4,414
Marketing And Reservation Fees
Depreciation and amortization	13,300	12,400	10,300
Interest expense	4,100	1,100	300
Cumulative Marketing Expenses In Excess Of Cumulative Marketing Fee Revenues
Receivable - marketing and reservation fees	18,500	17,000
Cumulative Reservation Expenses In Excess Of Cumulative Reservation Fee Revenues
Receivable - marketing and reservation fees	$ 35,500	$ 25,500