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Investment Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]        
Unrealized gain (loss) on investment securities held at the end of the period $ 16,887 $ 2,173 $ 19,979 $ 8,101