LEASES - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2022	Dec. 29, 2021	Dec. 30, 2020
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	$ 75	$ 80	$ 11
Interest on lease liabilities	45	59	27
Operating Lease, Cost	27,542	27,623	27,805
Short-term Lease, Cost	18	21	23
Variable Lease, Cost	1,274	893	635
Sublease Income	(4,555)	(3,823)	(3,251)
Total lease cost	24,399	24,853	25,250
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	23,730	24,020	23,972
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Total lease cost	465	413	464
Depreciation and amortization [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	73	78	11
Interest Expense
Lessee, Lease, Description [Line Items]
Total lease cost	45	59	27
Restructuring Charges [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	86	283	776
Property Lease [Member]
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	73	78	11
Interest on lease liabilities	42	58	27
Operating Lease, Cost	26,537	26,501	26,578
Variable Lease, Cost	597	539	444
Sublease Income	(4,555)	(3,823)	(3,251)
Total lease cost	22,694	23,353	23,809
Equipment Lease
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	2	2
Interest on lease liabilities	3	1
Operating Lease, Cost	1,005	1,122	1,227
Short-term Lease, Cost	18	21	23
Variable Lease, Cost	677	354	191
Total lease cost	$ 1,705	$ 1,500	$ 1,441