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GOODWILL AND INTANGIBLES (Tables) | 12 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in the carrying amount of goodwill by reportable segment | The changes in the carrying amount of goodwill by reportable segments for the years ended December 31, 2017 and 2016 were as follows:
|  | Americas Welding |  | International Welding |  | The Harris Products Group |  | Consolidated
Balance as of December 31, 2015 |  | $ | 152,335 |  |  | $ | 23,345 |  |  | $ | 11,824 |  |  | $ | 187,504 |
Additions and adjustments (1)(2) |  | 43,217 |  |  | (30 | ) |  | (301 | ) |  | 42,886 |
Foreign currency translation |  | 826 |  |  | 349 |  |  | 354 |  |  | 1,529 |
Balance as of December 31, 2016 |  | 196,378 |  |  | 23,664 |  |  | 11,877 |  |  | 231,919 |
Additions and adjustments (2) |  | (76 | ) |  | — |  |  | (301 | ) |  | (377 | )
Impairment charges (3) |  | (1,091 | ) |  | — |  |  | — |  |  | (1,091 | )
Foreign currency translation |  | 2,048 |  |  | 2,003 |  |  | 80 |  |  | 4,131 |
Balance as of December 31, 2017 |  | $ | 197,259 |  |  | $ | 25,667 |  |  | $ | 11,656 |  |  | $ | 234,582 |
Schedule of gross and net intangible assets other than goodwill by asset class | Gross carrying values and accumulated amortization of intangible assets other than goodwill by asset class were as follows:
|  | December 31, 2017 |  | December 31, 2016
|  | Gross Amount |  | Accumulated Amortization |  | Gross Amount |  | Accumulated Amortization
Intangible assets not subject to amortization |  |  |  |  |  |  |  |
Trademarks and trade names |  | $ | 24,235 |  |  |  |  | $ | 17,113 |  |  |
Intangible assets subject to amortization |  |  |  |  |  |  |  |
Trademarks and trade names |  | $ | 41,203 |  |  | $ | 24,147 |  |  | $ | 38,972 |  |  | $ | 20,648 |
Customer relationships |  | 93,139 |  |  | 47,175 |  |  | 91,216 |  |  | 39,033 |
Patents |  | 27,777 |  |  | 12,978 |  |  | 28,073 |  |  | 11,467 |
Other |  | 57,351 |  |  | 31,953 |  |  | 52,071 |  |  | 26,209 |
Total intangible assets subject to amortization |  | $ | 219,470 |  |  | $ | 116,253 |  |  | $ | 210,332 |  |  | $ | 97,357 |

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- Definition Tabular disclosure of the carrying value and accumulated amortization of finite-lived and indefinite-lived intangible assets, excluding goodwill, in total and by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of the company. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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