SIGNIFICANT ACCOUNTING POLICIES - Contract Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	$ 21,052	$ 4,928
Arcadia
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	14,697	0
DynaEnergetics
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	474	478
NobelClad
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	$ 5,881	$ 4,450