Reportable Segment Information Schedule Of Financial Information For Company's Franchising Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reportable Segment Information [Line Items]
Revenues	$ 267,577	$ 241,526	$ 716,446	$ 648,927
Operating income (loss)	78,618	73,803	186,433	178,124
Income (loss) before income taxes	70,200	62,268	156,188	146,181
Corporate & Other
Reportable Segment Information [Line Items]
Revenues	1,899	1,146	5,127	1,667
Operating income (loss)	(13,548)	(8,869)	(38,824)	(28,689)
Income (loss) before income taxes	(23,688)	(20,733)	(69,355)	(59,525)
Franchising | Operating Segments
Reportable Segment Information [Line Items]
Revenues	265,152	240,067	709,924	646,454
Operating income (loss)	95,760	87,011	237,926	221,041
Income (loss) before income taxes	97,482	87,340	238,212	219,934
SkyTouch Technology | Operating Segments
Reportable Segment Information [Line Items]
Revenues	526	313	1,395	806
Operating income (loss)	(3,594)	(4,339)	(12,669)	(14,228)
Income (loss) before income taxes	$ (3,594)	$ (4,339)	$ (12,669)	$ (14,228)