SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	12 Months Ended
	Dec. 29, 2024 USD ($) salesChannel segment	Dec. 31, 2023 USD ($)	Dec. 25, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of sales channels | salesChannel	2
Number of reportable segments | segment	1
Current restricted cash	$ 8,725	$ 15,046
Non-current restricted cash	7,793	4,608
Accounts receivable, allowance for doubtful accounts	0	0	$ 1,900
CARES Act, ERCs received	$ 1,900
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful life	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful life	7 years
Franchise
Summary Of Significant Accounting Policies [Line Items]
Deferred income	$ 5,025	4,582	$ 4,362
Franchise | Revenue from Contract with Customer Benchmark | Customer Concentration Risk | Three Franchisees
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	46.00%
Gift Card
Summary Of Significant Accounting Policies [Line Items]
Deferred income	$ 3,700	$ 3,400