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SUPPLEMENTAL FINANCIAL STATEMENT DATA - Equipment and Leasehold Improvements, Net - Tabular Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 30, 2022
Equipment and Leasehold Improvements
Equipment under finance leases	$ 5,434	$ 5,503
Equipment and leasehold improvements, gross	54,813	51,431
Accumulated depreciation and amortization	(30,318)	(28,894)
Total equipment and leasehold improvements, net	24,495	22,537
Furniture and Fixtures
Equipment and Leasehold Improvements
Equipment and leasehold improvements	4,176	4,062
Computer Hardware and Software
Equipment and Leasehold Improvements
Equipment and leasehold improvements	38,172	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	$ 3,199	$ 3,134

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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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