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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, 2021
Dec. 31, 2020
Dec. 31, 2019
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments      
Equity Securities $ 6,079,000 $ 6,202,000  
Summary of unrealized and realized gains and losses recognized in net income on equity securities      
Net gains (losses) recognized during the period on equity securities (123,000) 107,000 $ 158,000
Unrealized gain on equity securities with readily determinable fair values $ (123,000) $ 107,000 $ 158,000