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RATIONALIZATION AND ASSET IMPAIRMENTS (Textual) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Rationalization and Asset Impairments
Restructuring, Settlement and Impairment Provisions	$ 1,307	$ 11,542	$ 4,842	$ 21,717
Business Exit Costs			3,773
Restructuring Reserve	4,196		4,196		$ 11,192
International Welding 2018 Plans [Member]
Rationalization and Asset Impairments
Restructuring Reserve	1,553		1,553
International Welding
Rationalization and Asset Impairments
Restructuring, Settlement and Impairment Provisions	927	$ 11,542	3,126	$ 21,717
International Welding 2019 Plans [Member]
Rationalization and Asset Impairments
Restructuring Reserve	$ 1,583		$ 1,583