Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Revenues:
Franchise and restaurant revenues	$ 129,334	$ 127,137	$ 387,573	$ 379,619
Rental revenues	30,761	30,990	92,223	92,724
Financing revenues	2,758	3,156	10,779	10,223
Total segment revenues	162,853	161,283	490,575	482,566
Segment Expenses:
Franchise and restaurant expenses	47,570	44,091	135,403	130,875
Rental expenses	23,654	24,149	71,173	72,953
Financing expenses	0	0	825	245
Total segment expenses	71,224	68,240	207,401	204,073
Gross segment profit	91,629	93,043	283,174	278,493
General and administrative expenses	33,835	35,331	102,836	105,004
Interest expense	24,984	24,979	74,895	75,230
Amortization of intangible assets	3,071	3,072	9,212	9,212
Closure and impairment charges, net	192	(392)	1,029	770
Loss on extinguishment of debt	1	0	13	36
Debt modification costs	0	0	0	1,296
(Gain) loss on disposition of assets	(205)	(72)	592	(326)
Income before income tax provision	29,751	30,125	94,597	87,271
Income tax provision	(10,864)	(11,395)	(35,719)	(33,365)
Net income	18,887	18,730	58,878	53,906
Other comprehensive (loss) income, net of tax:
Adjustment to unrealized loss on available-for-sale investments	0	0	107	0
Foreign currency translation adjustment	(9)	3	(8)	(5)
Total comprehensive income	18,878	18,733	58,977	53,901
Net income available to common stockholders:
Net income	18,887	18,730	58,878	53,906
Less: Net income allocated to unvested participating restricted stock	(279)	(296)	(927)	(925)
Net income available to common stockholders	$ 18,608	$ 18,434	$ 57,951	$ 52,981
Net income available to common stockholders per share:
Basic (per share)	$ 0.99	$ 0.98	$ 3.09	$ 2.80
Diluted (per share)	$ 0.99	$ 0.97	$ 3.06	$ 2.76
Weighted average shares outstanding:
Basic (in shares)	18,703	18,831	18,757	18,898
Diluted (in shares)	18,890	19,085	18,964	19,166
Dividends declared per common share	$ 0.75	$ 0.75	$ 2.25	$ 2.25
Dividends paid per common share	$ 0.75	$ 0.75	$ 2.25	$ 2.25