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GOODWILL AND INTANGIBLE ASSETS - Intangible Assets with Definite Lives (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Intangible assets with definite lives |  |
Gross Carrying Amount | $ 19,846 | $ 20,869
Accumulated Amortization | (15,551) | (13,744)
Total | $ 4,295 | $ 7,125
Weighted-Average Useful Life (Years) | 9 years | 7 years 2 months 12 days
Patent and technology |  |
Intangible assets with definite lives |  |
Gross Carrying Amount | $ 11,044 | $ 10,797
Accumulated Amortization | (6,943) | (5,876)
Total | $ 4,101 | $ 4,921
Weighted-Average Useful Life (Years) | 9 years 3 months 18 days | 8 years 10 months 24 days
Trade names |  |
Intangible assets with definite lives |  |
Gross Carrying Amount | $ 5,114 | $ 6,297
Accumulated Amortization | (5,114) | (4,986)
Total |  | $ 1,311
Weighted-Average Useful Life (Years) |  | 3 years
Other |  |
Intangible assets with definite lives |  |
Gross Carrying Amount | 3,688 | $ 3,775
Accumulated Amortization | (3,494) | (2,882)
Total | $ 194 | $ 893
Weighted-Average Useful Life (Years) | 3 years | 4 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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