RESTRUCTURING AND ASSET IMPAIRMENTS - Summary of Restructuring Charges (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) employee	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee	264
Restructuring expenses, net and asset impairments	$ 1,116	$ 78
DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Assets classified as held for sale	437
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	880
Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	11
Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	225
Operating Segments | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	59	78
Operating Segments | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	938
Operating Segments | Severance | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	54
Operating Segments | Severance | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	707
Operating Segments | Asset Impairment | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments		(116)
Operating Segments | Contract Termination Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	0	39
Operating Segments | Contract Termination Costs | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	11
Operating Segments | Other Exit Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	5	11
Operating Segments | Other Exit Costs | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	220
Operating Segments | Equipment Moving Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments		$ 144
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	119
Corporate | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	119
Corporate | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	0
Corporate | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	$ 0