BUSINESS SEGMENTS - Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) segment	Jun. 30, 2020 USD ($)
Segment information
Number of segments | segment			2
Net sales	$ 65,438	$ 43,203	$ 121,096	$ 116,766
Segment operating income (loss)	2,668	(7,990)	1,958	(1,645)
Other income (expense), net	108	(85)	502	32
Interest expense, net	(81)	(156)	(216)	(394)
Income (loss) before income taxes	2,695	(8,231)	2,244	(2,007)
Depreciation and amortization	3,120	2,717	6,142	5,423
Operating Segments
Segment information
Segment operating income (loss)	6,572	(4,910)	9,696	5,170
Depreciation and amortization	3,028	2,653	5,967	5,259
Segment Reconciling Items
Segment information
Unallocated corporate expenses	(2,177)	(1,639)	(4,403)	(4,256)
Stock-based compensation	(1,727)	(1,441)	(3,335)	(2,559)
Other income (expense), net	108	(85)	502	32
Interest expense, net	(81)	(156)	(216)	(394)
Corporate and other
Segment information
Depreciation and amortization	92	64	175	164
DynaEnergetics
Segment information
Net sales	42,268	23,643	80,440	76,863
DynaEnergetics | Operating Segments
Segment information
Segment operating income (loss)	3,201	(6,895)	4,720	1,711
Depreciation and amortization	2,083	1,772	4,083	3,544
NobelClad
Segment information
Net sales	23,170	19,560	40,656	39,903
NobelClad | Operating Segments
Segment information
Segment operating income (loss)	3,371	1,985	4,976	3,459
Depreciation and amortization	$ 945	$ 881	$ 1,884	$ 1,715