SUPPLEMENTAL FINANCIAL STATEMENT DATA - Equipment and Leasehold Improvements, Net - Tabular Disclosure (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 30, 2022
Equipment and Leasehold Improvements
Equipment under finance leases	$ 5,588	$ 5,503
Equipment and leasehold improvements, gross	57,177	51,431
Accumulated depreciation and amortization	(31,683)	(28,894)
Total equipment and leasehold improvements, net	25,494	22,537
Furniture and Fixtures
Equipment and Leasehold Improvements
Equipment and leasehold improvements	4,188	4,062
Computer Hardware and Software
Equipment and Leasehold Improvements
Equipment and leasehold improvements	40,434	35,635
Leasehold Improvements
Equipment and Leasehold Improvements
Equipment and leasehold improvements	3,832	3,097
Automobiles Trucks and Field Equipment
Equipment and Leasehold Improvements
Equipment and leasehold improvements	$ 3,135	$ 3,134

Amount, before accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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