LEASES (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2023 USD ($) lease restaurant	Sep. 28, 2022 USD ($) restaurant	Sep. 27, 2023 USD ($) lease restaurant item	Sep. 28, 2022 USD ($) restaurant property
Lessee, Lease, Description [Line Items]
Initial lease term	20 years		20 years
Number of renewable options | item			4
Renewal term	5 years		5 years
Lessee, Operating Lease, Existence of Option to Extend [true false]			true
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 15,499	$ 10,572
Restaurants sold | restaurant	17		18
California
Lessee, Lease, Description [Line Items]
Number of restaurants primarily responsible for impairment | restaurant		1		1
California | Maximum
Lessee, Lease, Description [Line Items]
Operating Lease, Impairment Loss			$ 100	$ 100
Lease Not Yet Commenced
Lessee, Lease, Description [Line Items]
Number Of Leases | lease	1		1
Property Lease
Lessee, Lease, Description [Line Items]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 15,445	$ 10,486
Property Lease | California
Lessee, Lease, Description [Line Items]
Number of restaurants primarily responsible for impairment | restaurant			1	1
Equipment Lease
Lessee, Lease, Description [Line Items]
Number Of Finance Leases | lease	10		10
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 54	$ 86
Property lease modification
Lessee, Lease, Description [Line Items]
Number of Restaurants with lease modification | restaurant	5	5	27	18
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,900	$ 2,000	$ 15,400	$ 10,500
Number of properties impacted on original lease classification | property				1
Original impact of original lease classification				$ 700
Facility Leases
Lessee, Lease, Description [Line Items]
Number Of Finance Leases | lease	1		1