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CONTRACT ASSETS AND LIABILITIES (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Schedule of costs and estimated earnings on uncompleted contracts [Abstract]    
Costs incurred on uncompleted contracts $ 54,888 $ 41,329
Estimated profits, thereon 21,594 17,143
Total 76,482 58,472
Less: billings to date 61,315 44,859
Net 15,167 13,613
Schedule of Costs and Estimated Earnings on Uncompleted Contracts Included in Condensed Consolidated Balance Sheets [Abstract]    
Costs and estimated profits in excess of billings 20,504 17,193
Billings in excess of costs and estimated profits (5,328) (3,581)
Translation adjustment (9) 1
Net 15,167 $ 13,613
Balances previously classified as contract liabilities at the beginning of the period that have shipped $ 2,000