RATIONALIZATION AND ASSET IMPAIRMENTS (Textual) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Rationalization and asset impairment charges (gains)	$ 8,851	$ 1,495	$ 1,307	$ 3,535	$ 932	$ 2,636	$ 11,542	$ 10,175	$ 15,188	$ 25,285	$ 6,590
Restructuring Charges									11,688	31,263
Restructuring liability	8,202				11,192				8,202	11,192	$ 6,803
Other current assets	107,621				120,236				107,621	120,236
Other Liabilities, Current	142,441				$ 145,402				142,441	$ 145,402
International Welding [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring liability	$ 7,905								7,905
The Harris Products Group
Restructuring Cost and Reserve [Line Items]
Rationalization and asset impairment charges (gains)									$ 1,770