Reportable Segment Information - Schedule Of Financial Information For Company's Franchising Segment (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($) brand	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) brand	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of brands | brand	11								11
Revenues	$ 208,195	$ 267,577	$ 241,751	$ 207,118	$ 210,951	$ 241,526	$ 232,156	$ 175,245	$ 924,641	$ 859,878	$ 757,970
Operating income (loss)	52,462	78,618	64,942	42,873	47,195	73,803	62,917	41,404	238,895	225,319	214,568
Depreciation and amortization									11,705	11,542	9,365
Income (loss) from continuing operations before income taxes	43,792	$ 70,200	$ 55,610	$ 30,378	37,804	$ 62,268	$ 52,879	$ 31,034	199,980	183,985	173,758
Capital expenditures									21,967	34,660	36,574
Total assets	852,468				717,010				852,468	717,010	637,917
Investments in unconsolidated entities	94,839				67,037				94,839	67,037
Foreign Operations
Segment Reporting Information [Line Items]
Revenues									58,000	53,900	57,600
Long-lived assets	74,900				49,300				74,900	49,300	4,500
Franchising
Segment Reporting Information [Line Items]
Revenues									915,825	855,462	757,370
Operating income (loss)									307,354	285,752	273,177
Depreciation and amortization									5,191	6,762	6,125
Income (loss) from continuing operations before income taxes									307,847	284,851	272,520
Capital expenditures									17,552	28,662	19,958
Total assets	520,674				397,428				520,674	397,428	318,306
Franchising | Assets, Total
Segment Reporting Information [Line Items]
Investments in unconsolidated entities	94,800				67,000				94,800	67,000	50,600
SkyTouch Technology
Segment Reporting Information [Line Items]
Revenues									1,933	1,186	600
Operating income (loss)									(18,088)	(18,971)	(17,065)
Depreciation and amortization									1,853	1,450	1,007
Income (loss) from continuing operations before income taxes									(18,088)	(18,971)	(17,065)
Capital expenditures									1,159	1,454	1,816
Total assets	3,517				4,073				3,517	4,073	4,197
Corporate & Other
Segment Reporting Information [Line Items]
Revenues									6,883	3,230	0
Operating income (loss)									(50,371)	(41,462)	(41,544)
Depreciation and amortization									4,661	3,330	2,233
Income (loss) from continuing operations before income taxes									(89,779)	(81,895)	(81,697)
Capital expenditures									3,256	4,544	14,800
Total assets	328,277				315,509				328,277	315,509	315,414
Elimination Adjustments
Segment Reporting Information [Line Items]
Revenues									0	0	0
Operating income (loss)									0	0	0
Depreciation and amortization									0	0	0
Income (loss) from continuing operations before income taxes									0	0	0
Capital expenditures									0	0	0
Total assets	$ 0				$ 0				$ 0	$ 0	$ 0