CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2023	Dec. 25, 2022	Dec. 31, 2023	Dec. 25, 2022	Dec. 26, 2021
Revenues:
Total revenues			$ 891,551	$ 730,162	$ 601,193
Restaurant operating expenses (exclusive of depreciation and amortization shown below):
Food and beverage costs			197,374	172,561	134,201
Labor and other related expenses			294,010	238,257	189,167
Other restaurant operating expenses			134,477	114,476	94,847
Occupancy expenses			68,400	59,919	55,433
Pre-opening expenses			7,173	5,414	3,310
General and administrative expenses			103,121	84,959	70,388
Depreciation and amortization			41,223	34,230	32,379
Impairments and loss on disposal of assets			1,359	920	381
Transaction expenses (income), net			3,147	2,513	(1,156)
Total operating costs and expenses			850,284	713,249	578,950
Income from operations			41,267	16,913	22,243
Interest expense			(8,063)	(5,232)	(20,099)
Other income (expense), net			2,871	910	(1,774)
Income before income taxes			36,075	12,591	370
Income tax expense			(10,690)	(5,684)	(2,477)
Net income (loss)	$ 25,385	$ 6,907	$ 25,385	$ 6,907	(2,107)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Unrealized loss on derivatives	(889)	0			0
Income tax related to other comprehensive loss	222	0			0
Other comprehensive loss	(667)	0			0
Comprehensive income (loss)	$ 24,718	$ 6,907			$ (2,107)
Net income (loss) per common share - basic (in dollars per share)			$ 0.43	$ 0.12	$ (0.04)
Net income (loss) per common share - diluted (in dollars per share)			$ 0.41	$ 0.11	$ (0.04)
Weighted average common shares outstanding - basic (in shares)			59,531,404	59,097,512	48,213,995
Weighted average common shares outstanding - diluted (in shares)			61,191,613	60,140,045	48,213,995
Accumulated Deficit
Restaurant operating expenses (exclusive of depreciation and amortization shown below):
Net income (loss)			$ 25,385	$ 6,907	$ (2,107)
Restaurant sales
Revenues:
Total revenues			877,092	719,181	592,343
Franchise revenues
Revenues:
Total revenues			$ 14,459	$ 10,981	$ 8,850