BUSINESS SEGMENTS - Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment information
Number of segments | segment			2
Net sales	$ 43,203	$ 110,954	$ 116,766	$ 211,089
Segment operating (loss) income	(7,990)	24,653	(1,645)	45,105
Other (expense) income, net	(85)	343	32	322
Interest expense, net	(156)	(409)	(394)	(782)
(Loss) income before income taxes	(8,231)	24,587	(2,007)	44,645
Depreciation and amortization	2,717	2,554	5,423	4,750
Operating Segments
Segment information
Segment operating (loss) income	(4,910)	28,736	5,170	53,676
Depreciation and amortization	2,653	2,554	5,259	4,750
Segment Reconciling Items
Segment information
Unallocated corporate expenses	(1,639)	(2,588)	(4,256)	(5,905)
Stock-based compensation	(1,441)	(1,495)	(2,559)	(2,666)
Other (expense) income, net	(85)	343	32	322
Interest expense, net	(156)	(409)	(394)	(782)
Corporate and other
Segment information
Depreciation and amortization	64	0	164	0
DynaEnergetics
Segment information
Net sales	23,643	88,628	76,863	168,464
DynaEnergetics | Operating Segments
Segment information
Segment operating (loss) income	(6,895)	26,813	1,711	49,923
Depreciation and amortization	1,772	1,719	3,544	3,118
NobelClad
Segment information
Net sales	19,560	22,326	39,903	42,625
NobelClad | Operating Segments
Segment information
Segment operating (loss) income	1,985	1,923	3,459	3,753
Depreciation and amortization	$ 881	$ 835	$ 1,715	$ 1,632