RESTRUCTURING - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended					12 Months Ended
	May. 31, 2015 board_member	Jan. 31, 2015 Facility	Dec. 31, 2015 USD ($) employee	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring expenses								$ 4,063	$ 6,781
Number of members of board of directors not standing for re-election | board_member	2
Number of members of board of directors | board_member	9
Liability for restructuring charges			$ 734				$ 2,486	734	2,486
NobelClad Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			144	$ 48	$ 504	$ 54	6,781
DynaEnergetics Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			$ 429	$ 237	$ 612	382
Number of facilities closed | Facility		2
Number of facilities opened | Facility		2
Number of positions eliminated | employee			12
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses								2,626	2,466
Liability for restructuring charges			$ 452				2,406	452	2,406
Severance [Member] | Corporate Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			93			$ 1,560
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses								867
Liability for restructuring charges			$ 0				$ 0	$ 0	$ 0