Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 25, 2013	Sep. 26, 2012	Sep. 25, 2013	Sep. 26, 2012
Revenue:
Company restaurant sales	$ 83,371	$ 86,575	$ 247,242	$ 271,977
Franchise and license revenue	33,904	34,370	101,094	100,437
Total operating revenue	117,275	120,945	348,336	372,414
Costs of company restaurant sales:
Product costs	21,722	21,449	64,270	67,684
Payroll and benefits	33,746	34,409	98,512	108,779
Occupancy	5,598	5,780	16,339	17,776
Other operating expenses	12,022	12,170	34,538	37,267
Total costs of company restaurant sales	73,088	73,808	213,659	231,506
Costs of franchise and license revenue	11,599	12,078	34,586	34,776
General and administrative expenses	13,704	14,702	42,948	45,150
Depreciation and amortization	5,198	5,287	15,774	17,174
Operating (gains), losses and other charges, net	161	3,380	1,779	(794)
Total operating costs and expenses, net	103,750	109,255	308,746	327,812
Operating income	13,525	11,690	39,590	44,602
Interest expense, net	2,452	3,088	7,800	10,537
Other nonoperating (income) expense, net	(276)	38	1,056	7,941
Net income before income taxes	11,349	8,564	30,734	26,124
Provision for income taxes	4,318	3,201	10,424	10,295
Net income	7,031	5,363	20,310	15,829
Basic net income per share	$ 0.08	$ 0.06	$ 0.22	$ 0.17
Diluted net income per share	$ 0.08	$ 0.06	$ 0.22	$ 0.16
Basic weighted average shares outstanding	90,035	94,705	91,348	95,472
Diluted weighted average shares outstanding	91,967	96,745	93,377	97,196
Comprehensive income	$ 6,574	$ 5,631	$ 22,702	$ 16,633