REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2023	Jun. 25, 2022	Jul. 01, 2023	Jun. 25, 2022
Total revenue	$ 9,738	$ 11,355	$ 22,931	$ 18,721
Fixed-Price Revenue
Total revenue	6,080	8,891	16,517	14,099
Time-and-Material Revenue
Total revenue	$ 3,658	$ 2,464	$ 6,414	$ 4,622

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details