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CONTRACTS (Details) - USD ($)
$ in Thousands
Dec. 25, 2021
Dec. 26, 2020
CONTRACTS    
Costs incurred on uncompleted contracts $ 36,429 $ 39,154
Estimated earnings on uncompleted contracts 4,866 4,388
Earned revenues 41,295 43,542
Less: billings to date 39,172 40,710
Net costs and estimated earnings in excess of billings 2,123 2,832
Costs and estimated earnings in excess of billings on uncompleted contracts 4,177 4,090
Billings in excess of costs and estimated earnings on uncompleted contracts (2,054) (1,258)
Net costs in excess of billings on uncompleted contracts $ 2,123 $ 2,832