SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 25, 2024	Dec. 27, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Property and equipment, net	$ 97,043	$ 86,149
Impairment of property and equipment	$ 0	$ 100	$ 1,500
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring Costs and Asset Impairment Charges	Restructuring Costs and Asset Impairment Charges
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Property and equipment, net			0
Right-of-Use Assets, Net			244
Impairment of property and equipment			1,497
Impairment Losses of Right-of-Use Assets			39
Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Property and equipment, net			0
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Property and equipment, net			0
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Property and equipment, net			0
Right-of-Use Assets, Net			$ 244