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Investment Securities - Gross Realized and Unrealized Gains (Losses) on Marketable Equity Securities (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]        
Unrealized gain (loss) on marketable equity securities $ 12 $ 33 $ (445) $ (1,199)
Gain on sale of marketable equity securities, net 0 0 0 0
Total $ 12 $ 33 $ (445) $ (1,199)