REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 24, 2022	Sep. 25, 2021	Sep. 24, 2022	Sep. 25, 2021
Total Revenue	$ 13,056	$ 5,921	$ 31,777	$ 29,449
Total Revenue	13,056	5,921	31,777	29,449
Fixed-Price Revenue
Total Revenue	10,037	2,743	24,136	17,536
Time-and-Material Revenue
Total Revenue	$ 3,019	$ 3,178	$ 7,641	$ 11,913

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.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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