Deferred Revenue Components Of Deferred Revenue (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred Revenue [Line Items]
Deferred revenue	$ 70,402	$ 66,382
Loyalty programs [Member]
Deferred Revenue [Line Items]
Deferred revenue	62,540	57,757
Initial, relicensing and franchise fees [Member]
Deferred Revenue [Line Items]
Deferred revenue	5,724	6,439
Procurement service fees [Member]
Deferred Revenue [Line Items]
Deferred revenue	1,158	1,936
Other [Member]
Deferred Revenue [Line Items]
Deferred revenue	$ 980	$ 250