INCOME TAXES - Reconciliation of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of income tax provision [Abstract]
Statutory U.S. federal income tax	$ (536)	$ (412)	$ 11,907
U.S. state income tax, net of federal benefit	(338)	(24)	492
Loss attributable to noncontrolling interest	170	0	0
Foreign rate differential	1,690	1,223	4,257
Tax audit adjustments	39	0	0
Permanent items	683	210	379
Equity compensation	(1,476)	(715)	(1,469)
Deemed repatriation of foreign earnings	0	0	187
German legal entity structuring	0	1,161	0
DynaEnergetics Siberia shut down	0	324	6,193
Return to provision adjustments	(345)	(565)	108
Research credits	0	(115)	(105)
Other	(28)	10	179
Change in valuation allowances	(1,403)	(1,645)	533
Income tax (benefit) provision	$ (1,544)	$ (548)	$ 22,661

Effective Income Tax Rate Reconciliation, German Legal Entity Structuring , Amount

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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