BUSINESS COMBINATION - Schedule of Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Business Acquisition [Line Items]
Net sales	$ 165,831	$ 65,438	$ 304,547	$ 121,096
Net income attributable to DMC Global Inc. stockholders	$ 5,552	1,724	$ 2,264	2,156
Arcadia
Business Acquisition [Line Items]
Net sales		126,576		239,475
Net income attributable to DMC Global Inc. stockholders		$ 6,090		$ 10,443