BUSINESS SEGMENTS - Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)
Segment information
Number of segments | segment			2
Net sales	$ 100,094	$ 87,883	$ 311,183	$ 236,111
Segment operating income	12,821	8,820	57,926	24,361
Other income (expense), net	170	(335)	492	(1,039)
Interest expense, net	(387)	(495)	(1,169)	(1,096)
Income before income taxes	12,604	7,990	57,249	22,226
Operating Segments
Segment information
Segment operating income	17,130	11,959	70,806	34,592
Segment depreciation and amortization	2,617	2,397	7,367	7,164
Segment Reconciling Items
Segment information
Unallocated corporate expenses	(3,067)	(2,269)	(8,972)	(7,569)
Stock-based compensation	(1,242)	(870)	(3,908)	(2,662)
Other income (expense), net	170	(335)	492	(1,039)
Interest expense, net	(387)	(495)	(1,169)	(1,096)
DynaEnergetics
Segment information
Net sales	77,356	66,250	245,820	174,270
DynaEnergetics | Operating Segments
Segment information
Segment operating income	14,911	9,860	64,834	30,801
Segment depreciation and amortization	1,772	1,595	4,890	4,729
NobelClad
Segment information
Net sales	22,738	21,633	65,363	61,841
NobelClad | Operating Segments
Segment information
Segment operating income	2,219	2,099	5,972	3,791
Segment depreciation and amortization	$ 845	$ 802	$ 2,477	$ 2,435