Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 24, 2014	Sep. 25, 2013	Sep. 24, 2014	Sep. 25, 2013
Revenue:
Company restaurant sales	$ 82,827	$ 83,371	$ 243,269	$ 247,242
Franchise and license revenue	34,205	33,904	100,297	101,094
Total operating revenue	117,032	117,275	343,566	348,336
Costs of company restaurant sales:
Product costs	21,364	21,722	63,274	64,270
Payroll and benefits	32,507	33,746	97,584	98,512
Occupancy	5,418	5,598	15,445	16,339
Other operating expenses	12,514	12,022	35,322	34,538
Total costs of company restaurant sales	71,803	73,088	211,625	213,659
Costs of franchise and license revenue	11,309	11,599	32,639	34,586
General and administrative expenses	13,439	13,704	41,623	42,948
Depreciation and amortization	5,185	5,198	15,704	15,774
Operating (gains), losses and other charges, net	587	161	1,049	1,779
Total operating costs and expenses, net	102,323	103,750	302,640	308,746
Operating income	14,709	13,525	40,926	39,590
Interest expense, net	2,284	2,452	6,880	7,800
Other nonoperating (income) expense, net	(33)	(276)	(465)	1,056
Net income before income taxes	12,458	11,349	34,511	30,734
Provision for income taxes	4,115	4,318	11,464	10,424
Net income	$ 8,343	$ 7,031	$ 23,047	$ 20,310
Basic net income per share	$ 0.10	$ 0.08	$ 0.27	$ 0.22
Diluted net income per share	$ 0.10	$ 0.08	$ 0.26	$ 0.22
Basic weighted average shares outstanding	85,061	90,035	86,882	91,348
Diluted weighted average shares outstanding	86,983	91,967	88,844	93,377