SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share Reconciliation [Abstract]
Net income attributable to DMC Global Inc. stockholders, as reported	$ 2,563	$ 909
Adjustment of redeemable noncontrolling interest	(2,307)	(1,138)
Less: Undistributed net income available to participating securities	(5)	0
Numerator for basic net income (loss) per share:	251	(229)
Add: Undistributed net income allocated to participating securities	5	0
Less: Undistributed net income reallocated to participating securities	(5)	0
Numerator for diluted net income (loss) per share:	$ 251	$ (229)
Denominator:
Weighted average shares outstanding for basic net income (loss) per share (in shares)	19,610,644	19,462,636
Effect of dilutive securities (in shares)	11,811	0
Weighted average shares outstanding for diluted net income (loss) per share (in shares)	19,622,455	19,462,636
Net income (loss) per share attributable to DMC Global Inc. stockholders
Basic (in dollars per share)	$ 0.01	$ (0.01)
Diluted (in dollars per share)	$ 0.01	$ (0.01)
Anti-dilutive securities (in shares)	10,052