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SIGNIFICANT ACCOUNTING POLICIES - Research and Development (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]      
Research and development costs $ 8,450 $ 7,210 $ 5,168
Operating segments | DynaEnergetics      
Segment Reporting Information [Line Items]      
Research and development costs 7,057 5,932 4,335
Operating segments | NobelClad      
Segment Reporting Information [Line Items]      
Research and development costs $ 1,393 $ 1,278 $ 833