EQUITY SECURITIES PORTFOLIO INVESTMENT - Unrealized and Realized Gains or Losses on Investment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]
Change in fair value of investment	$ (263,695)	$ 87,527
Conversion of equity securities without readily determinable fair value to equity securities of public companies	0	(102,067)
Trading Securites - LF Fund Public Securities
Debt and Equity Securities, FV-NI [Line Items]
Change in fair value of investment	(247,126)	188,875
Realized investment gains (losses)	111,717	115,172
Trading Securites Lf Fund Securities
Debt and Equity Securities, FV-NI [Line Items]
Net realized and unrealized gain (loss) on investments	$ (135,409)	$ 201,980

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 220
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Amount of impairment loss on investment in equity security without readily determinable fair value.

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Amount of realized and unrealized gain (loss) on investment.

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