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DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Derivative asset fair value $ 1,232 $ 4,424
Derivative liability fair value $ 2,282 $ 10,165
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 $ 1,232 $ 4,424
Derivative liability fair value 2,282 10,165
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 110,733 49,307
Derivative asset fair value 204 66
Derivative liability fair value 2 274
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 1,547,244 1,347,559
Derivative asset fair value 1,028 4,358
Derivative liability fair value $ 2,280 $ 9,891