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EQUITY SECURITIES PORTFOLIO INVESTMENT (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items] |  |
Change in fair value of investment | $ 87,527 | $ 176,173
Conversion of equity securities without readily determinable fair value to equity securities of public companies | (102,067) | 0
Net realized and unrealized gain (loss) on investments | 839 | 13,661
Trading Securites - LF Fund Public Securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Change in fair value of investment | 188,875 | 72,104
Realized investment gains (losses) | 115,172 | (3,930)
Equity Securities - LF Fund Private Securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Change in fair value of investment | 0 | 103,751
Equity Securities Forward Contract |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Realized investment gains (losses) | 0 | 2,845
Trading Securites Lf Fund Securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Net realized and unrealized gain (loss) on investments | $ 201,980 | $ 174,770

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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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(d)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 2: 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=123583765&loc=SL75117546-209714 + Details
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