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REVENUE RECOGNITION (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Sales Revenue, Goods, Net | $ 790,052 | $ 626,858 | $ 1,547,748 | $ 1,207,755
Welding Equipment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales Revenue, Goods, Net | 329,012 |  | 644,817 |
Welding Consumables [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales Revenue, Goods, Net | $ 461,040 |  | $ 902,931 |

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Details
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