Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Revenues:
Franchise and restaurant revenues	$ 126,444	$ 124,153	$ 258,239	$ 252,482
Rental revenues	30,709	30,731	61,462	61,734
Financing revenues	3,368	3,230	8,021	7,067
Total segment revenues	160,521	158,114	327,722	321,283
Segment Expenses:
Franchise and restaurant expenses	42,155	42,308	87,833	86,784
Rental expenses	23,653	24,535	47,519	48,804
Financing expenses	240	245	825	245
Total segment expenses	66,048	67,088	136,177	135,833
Gross segment profit	94,473	91,026	191,545	185,450
General and administrative expenses	34,816	35,641	69,001	69,673
Interest expense	24,942	24,956	49,911	50,251
Amortization of intangible assets	3,070	3,069	6,141	6,140
Closure and impairment charges	637	324	837	1,162
Loss on extinguishment of debt	6	16	12	36
Debt modification costs	0	0	0	1,296
(Gain) loss on disposition of assets	(130)	64	797	(254)
Income before income tax provision	31,132	26,956	64,846	57,146
Income tax provision	(11,965)	(10,019)	(24,855)	(21,970)
Net income	19,167	16,937	39,991	35,176
Other comprehensive (income) loss, net of tax:
Adjustment to unrealized loss on available-for-sale investments	107	0	107	0
Foreign currency translation adjustment	7	(4)	1	(8)
Total comprehensive income	19,281	16,933	40,099	35,168
Net income available to common stockholders:
Net income	19,167	16,937	39,991	35,176
Less: Net income allocated to unvested participating restricted stock	(307)	(298)	(649)	(627)
Net income available to common stockholders	$ 18,860	$ 16,639	$ 39,342	$ 34,549
Net income available to common stockholders per share:
Basic (per share)	$ 1.00	$ 0.88	$ 2.09	$ 1.82
Diluted (per share)	$ 1.00	$ 0.87	$ 2.07	$ 1.80
Weighted average shares outstanding:
Basic (in shares)	18,776	18,953	18,785	18,932
Diluted (in shares)	18,955	19,222	19,003	19,207
Dividends declared per common share	$ 0.75	$ 0.75	$ 1.5	$ 1.5
Dividends paid per common share	$ 0.75	$ 0.75	$ 1.5	$ 1.5