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GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) reportingUnit | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill impairment | $ 109,486 | $ 0 | $ 0
Number of reporting units | reportingUnit | 3 |  |
Amortization of acquired intangible assets | $ 9,730 | $ 14,355 | $ 14,498
International |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill impairment | 109,486 |  |
North America |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill impairment | 0 |  |
Asia Pacific |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill impairment | $ 0 |  |
Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, useful life | 1 year |  |
Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets, useful life | 10 years |  |

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