Revenue Textual (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 62,247		$ 52,142
Long-term deferred revenue	96,351		$ 94,153
Revenue, remaining performance obligation	137,600
Revenues	$ 209,394	$ 188,868
Minimum
Disaggregation of Revenue [Line Items]
Franchise agreement initial term in years	5 years
Franchise fee in years	5 years
Maximum
Disaggregation of Revenue [Line Items]
Franchise agreement initial term in years	30 years
Franchise fee in years	10 years
Other Assets
Disaggregation of Revenue [Line Items]
Capitalized Franchise Sales Commissions	$ 45,100
Selling, General and Administrative Expenses
Disaggregation of Revenue [Line Items]
Amortization Expense And Impairment Loss	1,900
Corporate & Other
Disaggregation of Revenue [Line Items]
Revenues	3,772	$ 2,555
Loyalty Programs
Disaggregation of Revenue [Line Items]
Deferred revenue	27,400
Long-term deferred revenue	$ 16,900