Deferred Revenue Components Of Deferred Revenue (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deferred Revenue [Line Items]
Deferred revenue	$ 136,956	$ 133,218
Loyalty programs
Deferred Revenue [Line Items]
Deferred revenue	122,990	115,851
Initial, relicensing and franchise fees
Deferred Revenue [Line Items]
Deferred revenue	8,553	9,352
Procurement service fees
Deferred Revenue [Line Items]
Deferred revenue	5,132	7,668
Other
Deferred Revenue [Line Items]
Deferred revenue	$ 281	$ 347