Goodwill Schedule of Changes in Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 80,757,000	$ 78,905,000
Acquisition	93,384,000	0
Foreign Exchange	(856,000)	1,852,000
Impairment	(4,289,000)	0	$ 0
Goodwill, Ending Balance	168,996,000	80,757,000	78,905,000
Hotel Franchising
Goodwill [Roll Forward]
Goodwill, Beginning Balance	65,813,000	65,813,000
Acquisition	93,384,000	0
Foreign Exchange	0	0
Impairment	0	0
Goodwill, Ending Balance	159,197,000	65,813,000	65,813,000
Other
Goodwill [Roll Forward]
Goodwill, Beginning Balance	14,944,000	13,092,000
Acquisition	0	0
Foreign Exchange	(856,000)	1,852,000
Impairment	$ (4,289,000)	0
Goodwill, Ending Balance		$ 14,944,000	$ 13,092,000