Consolidated Statements Of Operations And Comprehensive Income - USD ($)	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Revenues:
Restaurant sales	$ 290,789,000	$ 271,586,000
Costs and expenses:
Cost of sales	82,575,000	73,005,000
Restaurant wages and related expenses	100,192,000	91,144,000
Restaurant rent expense	21,916,000	19,974,000
Other restaurant operating expenses	45,605,000	42,839,000
Advertising expense	11,872,000	11,265,000
General and administrative (including stock-based compensation expense of $1,526 and $1,585, respectively)	19,724,000	16,136,000
Depreciation and amortization	15,292,000	14,250,000
Impairment and other lease charges	910,000	309,000
Other income, net	(2,129,000)	0
Total operating expenses	295,957,000	268,922,000
Income (loss) from operations	(5,168,000)	2,664,000
Interest expense	5,947,000	5,926,000
Gain on bargain purchase	0	(22,000)
Loss before income taxes	(11,115,000)	(3,240,000)
Provision for income taxes	354,000	(138,000.0)
Net loss	$ (11,469,000)	$ (3,102,000)
Basic and diluted net income (loss) per share	$ (0.32)	$ (0.09)
Other comprehensive income (loss), net of tax:
Net loss	$ (11,469,000)	$ (3,102,000)
Other comprehensive income	0	0
Comprehensive loss	$ (11,469,000)	$ (3,102,000)