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Investment Securities, Equity Securities Changes in Fair Value Recognized in Net Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]          
Net losses recognized during the period on equity securities $ (14) $ (14) $ (24) $ (45)  
Less net losses recognized during the period on equity securities sold during the period 0 0 0 (61)  
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at period end (14) $ (14) (24) $ 16  
Equity Securities, Amortized Cost Basis 1,442   1,442   $ 1,425
Equity securities with a readily determinable fair value, at fair value 1,330   1,330   1,336
Mutual funds [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Equity Securities, Amortized Cost Basis 1,432   1,432   1,415
Equity securities with a readily determinable fair value, at fair value 1,240   1,240   1,240
Equity securities [Member]          
Debt and Equity Securities, FV-NI [Line Items]          
Equity Securities, Amortized Cost Basis 10   10   10
Equity securities with a readily determinable fair value, at fair value $ 90   $ 90   $ 96