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INVESTMENTS - Schedule of Fair Value of Equity Investments Trading (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | $ 950,393 | $ 546,016
Fixed income exchange traded funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 394,851 | 90,422
Financials |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 97,410 | 146,615
Equity exchange traded funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 331,190 | 114,919
Communications and technology |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 46,975 | 82,444
Consumer |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 33,938 | 51,083
Healthcare |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 21,375 | 28,796
Industrial, utilities and energy |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | 21,444 | 26,645
Basic materials |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity investments trading | $ 3,210 | $ 5,092

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