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INVESTMENTS - Schedule of Equity Securities and Trading Debt Securities Net Unrealized Investment Gains and Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Net unrealized investment gains (losses) | $ 13,643 | $ (62,131) | $ 38,430 | $ (102,998)

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- Definition Amount of net unrealized gain (loss) on investments in equity securities and trading debt securities. + References No definition available. + Details
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