REVENUE RECOGNITION (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	$ 3,234,180	$ 2,655,400	$ 3,003,272
Welding Consumables [Member]
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	1,856,880	1,509,509	1,715,002
Welding Equipment [Member]
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	$ 1,377,300	$ 1,145,891	$ 1,288,270