Consolidated Statements Of Operations And Comprehensive Loss - USD ($)	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Revenues:
Restaurant sales	$ 271,586,000	$ 239,852,000
Costs and expenses:
Cost of sales	73,005,000	64,236,000
Restaurant wages and related expenses	91,144,000	81,071,000
Restaurant rent expense	19,974,000	17,597,000
Other restaurant operating expenses	42,839,000	39,195,000
Advertising expense	11,265,000	9,901,000
General and administrative	16,136,000	15,576,000
Depreciation and amortization	14,250,000	13,151,000
Impairment and other lease charges	309,000	531,000
Total operating expenses	268,922,000	241,258,000
Income from operations	2,664,000	(1,406,000)
Interest expense	5,926,000	4,801,000
Gain on bargain purchase	(22,000)	0
Income (loss) before income taxes	(3,240,000)	(6,207,000)
Provision (benefit) for income taxes	(138,000)	(611,000.0)
Net income (loss)	$ (3,102,000)	$ (5,596,000)
Basic and diluted net income (loss) per share	$ (0.09)	$ (0.16)
Basic weighted average common shares outstanding	35,665,811	35,384,223
Diluted weighted average common shares outstanding	35,665,811	35,384,223
Other comprehensive income (loss), net of tax:
Net income (loss)	$ (3,102,000)	$ (5,596,000)
Other comprehensive income (loss)	0	0
Comprehensive income (loss)	$ (3,102,000)	$ (5,596,000)