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COSTS AND ESTIMATED PROFITS ON UNCOMPLETED CONTRACTS (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Schedule of costs and estimated earnings on uncompleted contracts [Abstract]    
Costs incurred on uncompleted contracts $ 25,214 $ 34,400
Estimated earnings, thereon 6,274 13,119
Total 31,488 47,519
Less: billings to date 15,864 33,422
Net 15,624 14,097
Schedule of Costs and Estimated Earnings on Uncompleted Contracts Included in Condensed Consolidated Balance Sheets [Abstract]    
Costs and estimated profits in excess of billings on uncompleted contracts 18,421 22,045
Billings in excess of costs and estimated profits on uncompleted contracts (2,813) (8,021)
Translation adjustment 16 73
Net $ 15,624 $ 14,097