RESTRUCTURING AND ASSET IMPAIRMENTS - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				$ 19,503		$ 4,283
Reclassification of DynaEnergetics Siberia cumulative translation loss to Statement of Operations upon substantial liquidation	$ 10,420			10,420	$ 0	0
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				5,641		1,384
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				2,837		2,533
Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				10,753		366
Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				39
Equipment Moving Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				233
DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Assets held-for-sale	$ 734			734
Operating segments | NobelClad
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				872	1,114	3,825
Operating segments | NobelClad | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 519		(636)		1,241
Operating segments | NobelClad | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 1,166		1,166	637	2,513
Operating segments | NobelClad | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				70	185	71
Operating segments | NobelClad | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				39	43
Operating segments | NobelClad | Equipment Moving Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				233	$ 249
Operating segments | DynaEnergetics
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				18,631		458
Operating segments | DynaEnergetics | Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			$ 6,231	6,277		143
Operating segments | DynaEnergetics | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			1,261	1,671		20
Operating segments | DynaEnergetics | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			268	10,683		$ 295
Operating segments | DynaEnergetics | Inventory Write Down
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			630
Operating segments | DynaEnergetics | Accounts Receivable Write Down
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			$ 131
Operating segments | DynaEnergetics | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				0
Operating segments | DynaEnergetics | Equipment Moving Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses				$ 0