COSTS AND ESTIMATED PROFITS ON UNCOMPLETED CONTRACTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule of costs and estimated earnings on uncompleted contracts [Abstract]
Costs incurred on uncompleted contracts	$ 51,017	$ 53,595
Estimated profits, thereon	10,771	6,847
Total	61,788	60,442
Less: billings to date	41,223	38,662
Net	20,565	21,780
Schedule of Costs and Estimated Earnings on Uncompleted Contracts Included in Condensed Consolidated Balance Sheets [Abstract]
Costs and estimated profits in excess of billings	32,455	32,514
Billings in excess of costs and estimated profits	(11,871)	(10,696)
Translation Adjustment	(19)	(38)
Net	20,565	$ 21,780
Balances previously classified as contract liabilities at the beginning of the period shipped during fiscal year	$ 10,500