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RATIONALIZATION AND ASSET IMPAIRMENTS (Textual) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Rationalization and Asset Impairments
Rationalization and asset impairment charges (Note 6)	$ 23,238	$ 1,307	$ 29,759	$ 4,842
Business Exit Costs			7,854
Restructuring Reserve	11,906		11,906		$ 8,202
Americas Welding 2020 Plans [Member]
Rationalization and Asset Impairments
Restructuring Reserve	510		510
International Welding 2020 Plans [Member]
Rationalization and Asset Impairments
Restructuring Reserve	7,833		7,833
International Welding
Rationalization and Asset Impairments
Rationalization and asset impairment charges (Note 6)	565	$ 927	5,896	$ 3,126
Business Exit Costs			6,125
Restructuring Reserve	11,396		11,396		$ 8,202
International Welding 2019 Plans [Member]
Rationalization and Asset Impairments
Restructuring Reserve	$ 3,563		$ 3,563