Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Revenues:
Revenue	$ 351,518	$ 290,789
Costs and expenses:
Cost of sales	102,927	82,575
Restaurant wages and related expenses	124,575	100,192
Restaurant rent expense	29,454	21,916
Other restaurant operating expenses	57,978	45,605
Advertising expense	13,876	11,872
General and administrative (including stock-based compensation expense of $1,132 and $1,526 respectively)	20,787	19,724
Depreciation and amortization	21,031	15,292
Impairment and other lease charges	2,881	910
Other expense (income), net	56	(2,129)
Total operating expenses	373,565	295,957
Loss from operations	(22,047)	(5,168)
Interest expense	7,140	5,947
Loss before income taxes	(29,187)	(11,115)
Provision (benefit) for income taxes	(6,978)	354
Net loss	$ (22,209)	$ (11,469)
Basic and diluted net income (loss) per share	$ (0.44)	$ (0.32)
Shares used in computing net loss per share:
Basic and diluted weighted average common shares outstanding	50,821,101	36,045,137
Other comprehensive income (loss), net of tax:
Net loss	$ (22,209)	$ (11,469)
Change in valuation of interest rate swap (Note 7)	(5,209)	0
Comprehensive loss	$ (27,418)	$ (11,469)