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ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Tables) | 6 Months Ended
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Jun. 30, 2021
ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME |
Schedule of components of accumulated other comprehensive (loss) income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ |  | Currency |  | Gains (Losses) |  | ​ | ​
​ | ​ | Translation | ​ | on Available-for- | ​ | ​ | ​
​ | ​ | Gains (Losses) | ​ | Sale Securities | ​ | Total
Balance at December 31, 2020 | ​ | $ | 2,950 | ​ | $ | 84 | ​ | $ | 3,034
Other comprehensive (loss) income before reclassifications | ​ |  | (19,696) | ​ | ​ | (160) | ​ | ​ | (19,856)
Amounts reclassified from accumulated other comprehensive (loss) income | ​ |  | — | ​ | ​ | — | ​ | ​ | —
Net current-period other comprehensive (loss) income | ​ |  | (19,696) | ​ | ​ | (160) | ​ | ​ | (19,856)
Balance at June 30, 2021 | ​ | $ | (16,746) | ​ | $ | (76) | ​ | $ | (16,822)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ |  | Currency | ​ | Gains (Losses) | ​ | ​ | ​
​ |  | Translation |  | on Available-for- |  | ​ | ​
​ | ​ | Losses | ​ | Sale Securities | ​ | Total
Balance at December 31, 2019 | ​ | $ | (32,581) | ​ | $ | 194 | ​ | $ | (32,387)
Other comprehensive (loss) income before reclassifications | ​ |  | (21,555) | ​ | ​ | 504 | ​ | ​ | (21,051)
Amounts reclassified from accumulated other comprehensive (loss) income | ​ |  | — | ​ | ​ | — | ​ | ​ | —
Net current-period other comprehensive (loss) income | ​ |  | (21,555) | ​ | ​ | 504 | ​ | ​ | (21,051)
Balance at June 30, 2020 | ​ | $ | (54,136) | ​ | $ | 698 | ​ | $ | (53,438)

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