BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Risk (Details) - item	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 24, 2025	Sep. 25, 2024	Sep. 24, 2025	Sep. 25, 2024	Dec. 25, 2024
Concentration of Risk
Percentage of concentration	100.00%	100.00%	100.00%	100.00%
Supplier Concentration Risk | Supplier One | Accounts Payable
Concentration of Risk
Number Of Suppliers					1
Percentage of concentration					19.70%
Supplier Concentration Risk | Largest Supplier One | Purchased
Concentration of Risk
Percentage of concentration	24.70%	24.00%	18.90%	24.30%
Greater Los Angeles area market | Geographic Concentration Risk | Revenue
Concentration of Risk
Percentage of concentration	72.20%	72.50%	71.90%	71.90%