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DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivative Fair Values on Consolidated Balance Sheet [Line Items] |  |
Derivative asset fair value | $ 7,752 | $ 37,682
Derivative liability fair value | $ 2,789 | $ 703
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities
Not Designated as Hedging Instruments |  |
Derivative Fair Values on Consolidated Balance Sheet [Line Items] |  |
Derivative asset fair value | $ 7,752 | $ 37,682
Derivative liability fair value | 2,789 | 703
Not Designated as Hedging Instruments | Relating to investment portfolio: | Foreign exchange forward contracts |  |
Derivative Fair Values on Consolidated Balance Sheet [Line Items] |  |
Derivative notional amount | 51,959 | 54,076
Derivative asset fair value | 0 | 81
Derivative liability fair value | 1,244 | 559
Not Designated as Hedging Instruments | Relating to underwriting portfolio: | Foreign exchange forward contracts |  |
Derivative Fair Values on Consolidated Balance Sheet [Line Items] |  |
Derivative notional amount | 1,318,403 | 1,441,273
Derivative asset fair value | 7,752 | 37,601
Derivative liability fair value | $ 1,545 | $ 144

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