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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Unrealized and realized gains and losses recognized in net income on equity securities ) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments      
Equity Securities $ 5,417,000 $ 5,358,000  
Summary of unrealized and realized gains and losses recognized in net income on equity securities      
Net losses recognized during the period on equity securities 59,000 (721,000) $ (123,000)
Unrealized gain on equity securities with readily determinable fair values $ 59,000 $ (721,000) $ (123,000)