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GOODWILL AND INTANGIBLES (Changes in Carrying Amount of Goodwill by Reportable Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at the beginning of the period | $ 337,107 | $ 281,294
Additions and adjustments | 596 | 53,987
Foreign currency translation | (2,110) | 1,826
Balance at the end of the period | 335,593 | 337,107
Americas Welding [Member] |  |
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at the beginning of the period | 278,496 | 239,215
Additions and adjustments |  | 37,346
Foreign currency translation | 1,314 | 1,935
Balance at the end of the period | 279,810 | 278,496
International Welding [Member] |  |
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at the beginning of the period | 41,474 | 24,248
Additions and adjustments | 697 | 17,254
Foreign currency translation | (3,111) | (28)
Balance at the end of the period | 39,060 | 41,474
The Harris Products Group |  |
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at the beginning of the period | 17,137 | 17,831
Additions and adjustments | (101) | (613)
Foreign currency translation | (313) | (81)
Balance at the end of the period | $ 16,723 | $ 17,137

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- Definition The aggregate amount of goodwill acquired and adjustments made during the period and allocated to the reportable segment. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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