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INTANGIBLE ASSETS - Schedule of intangible assets (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
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Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 220,288 | $ 219,251
Finite-Lived Intangible Assets, Accumulated Amortization | (51,038) | (35,240)
Finite-lived intangible assets, net | 169,250 | 184,011
Technology Equipment [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 83,882 | 83,368
Finite-Lived Intangible Assets, Accumulated Amortization | (22,012) | (14,250)
Finite-lived intangible assets, net | 61,870 | 69,118
Customer relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 109,514 | 108,995
Finite-Lived Intangible Assets, Accumulated Amortization | (24,302) | (18,197)
Finite-lived intangible assets, net | 85,212 | 90,798
Trademarks and other [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 26,892 | 26,888
Finite-Lived Intangible Assets, Accumulated Amortization | (4,724) | (2,793)
Finite-lived intangible assets, net | $ 22,168 | $ 24,095

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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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