LEASES - Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 30, 2022
Leases
Right-of-use assets	$ 13,894	$ 12,390
Operating leases, lease liabilities
Lease liability	4,877	4,625
Lease liability, less current portion	10,731	8,599
Total lease liabilities	15,608	13,224
Finance leases (included in equipment and leasehold improvements, net):
Equipment and leasehold improvements, net	5,588	5,503
Accumulated depreciation	(3,266)	(2,830)
Total equipment and leasehold improvements, net	$ 2,322	$ 2,673
Finance Lease, Right-of-Use Asset, Statement of Financial Position	Equipment and leasehold improvements, net	Equipment and leasehold improvements, net
Finance lease obligations
Finance lease obligations	$ 1,143	$ 1,113
Finance lease obligations, less current portion	1,251	1,601
Total finance lease obligations	$ 2,394	$ 2,714

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