CONTRACTS (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
CONTRACTS
Costs incurred on uncompleted contracts	$ 59,298	$ 36,429
Estimated earnings on uncompleted contracts	4,464	4,866
Earned revenues	63,762	41,295
Less: billings to date	59,784	39,172
Net costs and estimated earnings in excess of billings	3,978	2,123
Costs and estimated earnings in excess of billings on uncompleted contracts	4,934	4,177
Billings in excess of costs and estimated earnings on uncompleted contracts	(956)	(2,054)
Net costs in excess of billings on uncompleted contracts	$ 3,978	$ 2,123