BUSINESS SEGMENTS - Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)
Segment information
Number of segments | segment			2
Net sales	$ 110,954	$ 80,915	$ 211,089	$ 148,228
Segment operating income	24,653	10,229	45,105	15,541
Other income (expense), net	343	(327)	322	(704)
Interest expense, net	(409)	(136)	(782)	(601)
Income before income taxes	24,587	9,766	44,645	14,236
Operating Segments
Segment information
Segment operating income	28,736	13,931	53,676	22,639
Segment depreciation and amortization	2,554	2,392	4,750	4,767
Segment Reconciling Items
Segment information
Unallocated corporate expenses	(2,588)	(2,618)	(5,905)	(5,306)
Stock-based compensation	(1,495)	(1,084)	(2,666)	(1,792)
Other income (expense), net	343	(327)	322	(704)
Interest expense, net	(409)	(136)	(782)	(601)
DynaEnergetics
Segment information
Net sales	88,628	58,899	168,464	108,020
DynaEnergetics | Operating Segments
Segment information
Segment operating income	26,813	12,228	49,923	20,948
Segment depreciation and amortization	1,719	1,575	3,118	3,134
NobelClad
Segment information
Net sales	22,326	22,016	42,625	40,208
NobelClad | Operating Segments
Segment information
Segment operating income	1,923	1,703	3,753	1,691
Segment depreciation and amortization	$ 835	$ 817	$ 1,632	$ 1,633