Deferred Revenue Components Of Deferred Revenue (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Deferred revenue	$ 76,643	$ 67,322
Loyalty Programs [Member]
Deferred revenue	71,781	61,604
Initial, Relicensing And Franchise Fees [Member]
Deferred revenue	3,323	4,631
Procurement Service Fees [Member]
Deferred revenue	1,105	1,052
Other [Member]
Deferred revenue	$ 434	$ 35