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GOODWILL AND LONG-LIVED ASSETS - Schedule of Goodwill (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Goodwill [Roll Forward] |  |  |  |  |  |
Goodwill, beginning balance |  |  | $ 325,017,000 |  | $ 325,017,000 |
Impairment loss | $ 0 |  |  | $ 0 | (109,486,000) | $ 0
Foreign currency translation |  |  |  |  | (2,522,000) |
Goodwill, ending balance | 213,009,000 |  |  |  | 213,009,000 |
North America |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Goodwill, beginning balance |  |  | 178,685,000 |  | 178,685,000 |
Impairment loss | 0 | $ 0 | 0 |  | 0 |
Foreign currency translation |  |  |  |  | 0 |
Goodwill, ending balance | 178,685,000 |  |  |  | 178,685,000 |
International |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Goodwill, beginning balance |  |  | 146,332,000 |  | 146,332,000 |
Impairment loss | 0 | $ 0 | $ (109,500,000) |  | (109,486,000) |
Foreign currency translation |  |  |  |  | (2,522,000) |
Goodwill, ending balance | $ 34,324,000 |  |  |  | $ 34,324,000 |

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