Consolidated Statements Of Operations And Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Revenues:
Restaurant sales	$ 217,676	$ 179,822	$ 629,948	$ 499,858
Costs and expenses:
Cost of sales	60,676	55,169	178,022	148,606
Restaurant wages and related expenses	67,116	56,023	197,135	159,764
Restaurant rent expense	14,106	12,205	43,101	35,269
Other restaurant operating expenses	34,261	29,179	100,407	82,264
Advertising expense	8,188	6,794	23,551	20,621
General and administrative	11,764	10,031	36,263	28,923
Depreciation and amortization	9,418	9,318	29,216	27,121
Impairment and other lease charges	396	773	2,732	1,822
Other expense (income)	0	0	(126)	25
Total operating expenses	205,925	179,492	610,301	504,415
Income (loss) from operations	11,751	330	19,647	(4,557)
Interest expense	4,512	4,683	14,026	14,080
Loss on extinguishment of debt	0	0	12,635	0
Income (loss) before income taxes	7,239	(4,353)	(7,014)	(18,637)
Provision (benefit) for income taxes	0	(2,632)	0	(7,555)
Net income (loss)	$ 7,239	$ (1,721)	$ (7,014)	$ (11,082)
Basic and diluted net income (loss) per share	$ 0.16	$ (0.05)	$ (0.20)	$ (0.37)
Weighted Average Number of Shares Outstanding, Basic	35,009,656	34,797,490	34,930,326	29,571,846
Weighted Average Number of Shares Outstanding, Diluted	44,678,514	34,797,490	34,930,326	29,571,846
Other comprehensive income (loss), net of tax:
Net income (loss)	$ 7,239	$ (1,721)	$ (7,014)	$ (11,082)
Other comprehensive income (loss)	0	0	0	0
Comprehensive income (loss)	$ 7,239	$ (1,721)	$ (7,014)	$ (11,082)