Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Royalty fees	$ 111,009	$ 103,322	$ 290,926	$ 263,215
Initial franchise and relicensing fees	6,262	5,729	18,957	17,263
Procurement services	11,620	8,810	39,391	30,545
Marketing And Reservation Revenue	152,367	142,915	416,715	382,245
Other	10,232	9,154	30,336	26,546
Revenues	291,490	269,930	796,325	719,814
Effect of Topic 606 Revenues
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Royalty fees	111,009	103,322	290,926	263,215
Initial franchise and relicensing fees	6,262	5,729	18,957	17,263
Procurement services	11,620	8,810	39,391	30,545
Marketing And Reservation Revenue	152,367	142,915	416,715	382,245
Other	9,891	8,803	29,292	25,499
Revenues	291,149	269,579	795,281	718,767
Effect of Non-Topic 606 Revenues
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	341	351	1,044	1,047
Over time | Effect of Topic 606 Revenues
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Royalty fees	111,009	103,322	290,926	263,215
Initial franchise and relicensing fees	6,262	5,729	18,957	17,263
Procurement services	10,949	8,310	37,433	29,259
Marketing And Reservation Revenue	139,577	138,222	371,321	351,638
Other	9,769	6,912	28,313	20,566
Revenues	277,566	262,495	746,950	681,941
Point in time | Effect of Topic 606 Revenues
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Royalty fees	0	0	0	0
Initial franchise and relicensing fees	0	0	0	0
Procurement services	671	500	1,958	1,286
Marketing And Reservation Revenue	12,790	4,693	45,394	30,607
Other	122	1,891	979	4,933
Revenues	$ 13,583	$ 7,084	$ 48,331	$ 36,826