Consolidated Statements Of Comprehensive Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Revenues:
Restaurant sales	$ 368,559,000	$ 303,050,000	$ 659,348,000	$ 574,636,000
Costs and expenses:
Cost of sales	109,157,000	81,917,000	191,732,000	154,922,000
Restaurant wages and related expenses	121,140,000	96,954,000	221,332,000	188,098,000
Restaurant rent expense	26,690,000	19,879,000	48,606,000	39,853,000
Other restaurant operating expenses	56,308,000	44,589,000	101,913,000	87,428,000
Advertising expense	14,677,000	12,356,000	26,549,000	23,621,000
General and administrative (including stock-based compensation expense of $1,282, $1,385, $2,808 and $2,970 respectively)	20,620,000	16,020,000	40,344,000	32,156,000
Depreciation and amortization	17,121,000	14,621,000	32,413,000	28,871,000
Impairment and other lease charges	367,000	2,881,000	1,277,000	3,190,000
Other expense (income), net	376,000	0	(1,753,000)	0
Total operating expenses	366,456,000	289,217,000	662,413,000	558,139,000
Income (loss) from operations	2,103,000	13,833,000	(3,065,000)	16,497,000
Loss on extinguishment of debt	7,443,000	0	7,443,000	0
Interest expense	6,900,000	5,917,000	12,847,000	11,843,000
Gain on bargain purchase	0	(208,000)	0	(230,000)
Income (loss) before income taxes	(12,240,000)	8,124,000	(23,355,000)	4,884,000
Provision (benefit) for income taxes	(8,508,000)	336,000.0	(8,154,000)	198,000
Net income (loss)	$ (3,732,000)	$ 7,788,000	$ (15,201,000)	$ 4,686,000
Basic and diluted net income (loss) per share	$ (0.09)	$ 0.17	$ (0.39)	$ 0.10
Other comprehensive income (loss), net of tax:
Net income (loss)	$ (3,732,000)	$ 7,788,000	$ (15,201,000)	$ 4,686,000
Other comprehensive income	0	0	0	0
Comprehensive income (loss)	$ (3,732,000)	$ 7,788,000	$ (15,201,000)	$ 4,686,000