BUSINESS SEGMENTS - Segment Operations and Assets (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of segments | segment									2
Segment Operations [Abstract]
Net sales	$ 86,367	$ 100,094	$ 110,954	$ 100,135	$ 90,318	$ 87,883	$ 80,915	$ 67,313	$ 397,550	$ 326,429	$ 192,803
Segment operating income (loss)									58,425	37,424	(12,260)
Other expense, net									169	1,202	1,376
Interest expense, net									(1,554)	(1,615)	(1,648)
Income (loss) before income taxes									56,702	34,607	(15,284)
Segment depreciation and amortization									9,860	9,520	10,566
Consolidated acquisition of property, plant and equipment									27,210	45,095	6,186
Segment Assets [Abstract]
Assets	277,421				240,418				277,421	240,418
Cash and cash equivalents	20,353				13,375				20,353	13,375
Deferred tax assets	10,834				8,252				10,834	8,252
Corporate property, plant and equipment	108,234				95,140				108,234	95,140
Operating segments
Segment Operations [Abstract]
Segment operating income (loss)									75,974	50,975	(1,890)
Segment depreciation and amortization									9,421	9,520	10,566
Consolidated acquisition of property, plant and equipment									25,345	43,322	5,609
Segment Assets [Abstract]
Assets	223,980				210,832				223,980	210,832
Segment reconciling items
Segment Operations [Abstract]
Unallocated corporate expenses									(12,345)	(9,971)	(7,395)
Stock-based compensation									(5,204)	(3,580)	(2,975)
Segment Assets [Abstract]
Cash and cash equivalents	20,353				13,375				20,353	13,375
Prepaid expenses and other assets	24,535				8,530				24,535	8,530
Deferred tax assets	3,836				4,001				3,836	4,001
Corporate and other
Segment Operations [Abstract]
Segment depreciation and amortization									439	0	0
Consolidated acquisition of property, plant and equipment									1,865	1,773	577
Segment Assets [Abstract]
Corporate property, plant and equipment	4,717				3,680				4,717	3,680
DynaEnergetics | Operating segments
Segment Operations [Abstract]
Net sales									310,424	237,448	121,253
Segment operating income (loss)									68,781	44,476	15,470
Segment depreciation and amortization									6,375	6,308	6,879
Consolidated acquisition of property, plant and equipment									19,785	41,041	4,025
Segment Assets [Abstract]
Assets	165,775				151,001				165,775	151,001
NobelClad | Operating segments
Segment Operations [Abstract]
Net sales									87,126	88,981	71,550
Segment operating income (loss)									7,193	6,499	(17,360)
Segment depreciation and amortization									3,046	3,212	3,687
Consolidated acquisition of property, plant and equipment									5,560	2,281	$ 1,584
Segment Assets [Abstract]
Assets	$ 58,205				$ 59,831				$ 58,205	$ 59,831