RESTRUCTURING AND ASSET IMPAIRMENTS - Summary of Restructuring Charges (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020 employee	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	$ 2,046		$ 324	$ 3,162	$ 402
Number of positions eliminated | employee		264
DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Assets classified as held for sale	421			421
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	312			1,191
Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	1,181			1,181
Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments				11
Equipment Moving Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	126			126
Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	427			653
Operating Segments | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	195		324	254	402
Operating Segments | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	1,851			2,789
Operating Segments | Severance | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	191		712	244	712
Operating Segments | Severance | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	121			828
Operating Segments | Asset impairment | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	0			0
Operating Segments | Asset impairment | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	1,181			1,181
Operating Segments | Gain on asset disposal | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments			(519)		(636)
Operating Segments | Contract Termination Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments			4	0	43
Operating Segments | Contract Termination Costs | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments				11
Operating Segments | Equipment Moving Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	0		82	0	227
Operating Segments | Equipment Moving Costs | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	126			126
Operating Segments | Other Exit Costs | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	4		$ 45	10	$ 56
Operating Segments | Other Exit Costs | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments	$ 423			643
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 | Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments				0
Corporate | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses, net and asset impairments				0
Corporate | Equipment Moving 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