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REVENUE RECOGNITION (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	$ 925,448	$ 757,021
Welding Consumables [Member]
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	539,162	434,179
Welding Equipment [Member]
Disaggregation of Revenue [Line Items]
Net sales (Note 2)	$ 386,286	$ 322,842

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