UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 01, 2023	Oct. 02, 2022
Income Statement [Abstract]
Total revenue	$ 175,553	$ 139,258	$ 551,530	$ 434,184
Restaurant operating costs (excluding depreciation and amortization)
Food, beverage, and packaging	51,818	44,617	161,936	139,262
Labor	43,913	37,193	138,484	121,946
Occupancy	13,782	12,302	43,781	41,256
Other operating expenses	21,553	18,738	66,847	57,563
Total restaurant operating expenses	131,066	112,850	411,048	360,027
General and administrative expenses	24,472	16,547	76,817	53,768
Depreciation and amortization	11,528	10,018	35,096	31,783
Restructuring and other costs	1,092	2,055	5,160	4,989
Pre-opening costs	3,410	6,175	12,809	14,225
Impairment and asset disposal costs	1,190	3,838	4,295	9,848
Total operating expenses	172,758	151,483	545,225	474,640
Income (loss) from operations	2,795	(12,225)	6,305	(40,456)
Other income (expense):
Interest (income) expense, net	(3,956)	(115)	(4,630)	262
Other income, net	120	188	412	644
Income (loss) before income taxes	6,871	(11,922)	11,347	(40,074)
Provision for (benefit from) income taxes	38	(29)	116	67
Net income (loss)	$ 6,833	$ (11,893)	$ 11,231	$ (40,141)
Earnings (loss) per common share:
Basic net income (loss) per common share (in usd per share)	$ 0.06	$ (8.96)	$ 0.26	$ (30.54)
Diluted net income (loss) per common share (in usd per share)	$ 0.06	$ (8.96)	$ 0.24	$ (30.54)
Denominator:
Weighted average shares outstanding—basic (in shares)	113,584	1,327	43,244	1,314
Weighted average shares outstanding, diluted	117,713	1,327	45,966	1,314