SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Inventory, Net [Abstract]
Inventory valuation reserves	$ 4,226,000	$ 3,682,000
Goodwill [Abstract]
Goodwill impairment charge	0	11,464,000	$ 0
Goodwill	$ 16,097,000	17,190,000	32,762,000
Purchased Intangible Assets [Abstract]
Weighted average amortization period	12 years
Customer Advances [Abstract]
Customer advances	$ 2,619,000	2,396,000
Recently Adopted Accounting Standards [Abstract]
Debt issuance costs	518,000	674,000
NobelClad [Member] | Restructuring expenses [Member]
Asset Impairments [Abstract]
Impairment of long-lived assets		205,000	3,946,000
Operating segments [Member] | NobelClad [Member]
Goodwill [Abstract]
Goodwill impairment charge		0
Goodwill	16,097,000	17,190,000	19,418,000
Operating segments [Member] | DynaEnergetics [Member]
Goodwill [Abstract]
Goodwill impairment charge		11,464,000
Goodwill	$ 0	0	$ 13,344,000
Other assets, net [Member] | Accounting Standards Update 2015-03 [Member]
Recently Adopted Accounting Standards [Abstract]
Debt issuance costs		(674,000)
Line of credit [Member] | Accounting Standards Update 2015-03 [Member]
Recently Adopted Accounting Standards [Abstract]
Debt issuance costs		$ 674,000