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EQUITY INVESTMENT (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Jan. 06, 2021 | Feb. 28, 2020
Schedule of Equity Method Investments [Line Items] |  |  |  |
Unrealized gain on investments | $ 40,072 | $ 0 |  |
Stash |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity investment, aggregate cost |  |  | $ 1,200 | $ 80,000
Unrealized gain on investments | $ 40,100 |  |  |

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- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
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