Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2022	Mar. 30, 2021
Income Statement [Abstract]
Revenues	$ 298,729	$ 223,307
Restaurant operating costs (excluding depreciation and amortization):
Cost of sales	81,466	56,149
Labor and benefits	116,286	81,680
Occupancy and operating	71,701	59,828
General and administrative	18,253	15,261
Depreciation and amortization	17,976	18,203
Restaurant opening	583	128
Loss on disposal and impairment of assets	157	273
Total costs and expenses	306,422	231,522
Loss from operations	(7,693)	(8,215)
Other (expense) income:
Interest expense, net	(634)	(1,402)
Other (expense) income, net	(388)	310
Total other expense	(1,022)	(1,092)
Loss before income taxes	(8,715)	(9,307)
Income tax benefit	(10,175)	(6,166)
Net income (loss)	$ 1,460	$ (3,141)
Net income (loss) per share:
Basic	$ 0.06	$ (0.14)
Diluted	$ 0.06	$ (0.14)
Weighted average number of shares outstanding:
Basic	23,377	22,926
Diluted	23,716	22,926