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Other Assets Other Assets (Investments in Limited Partnerships) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments      
Investment in limited partnerships $ 15,027,000 $ 13,599,000  
Aldine Capital Funds      
Schedule of Equity Method Investments      
Investment in limited partnerships 13,500,000 12,800,000  
Remaining commitment on Equity Method Investments 5,300,000    
Original Commitment to Equity Method Investments 15,000,000    
Income from Equity Method Investments 4,800,000 3,000,000 $ 2,500,000
Loss on Equity Method Investments 101,000 0 24,000
Dane Workforce Housing Fund LLC      
Schedule of Equity Method Investments      
Investment in limited partnerships 916,000 653,000  
Remaining commitment on Equity Method Investments 63,000    
Original Commitment to Equity Method Investments 1,000,000    
Income from Equity Method Investments 13,000 8,000 2,000
Loss on Equity Method Investments 0 0 19,000
BankTech Ventures, LP      
Schedule of Equity Method Investments      
Investment in limited partnerships 569,000 154,000  
Remaining commitment on Equity Method Investments 530,000    
Original Commitment to Equity Method Investments 1,000,000    
Income from Equity Method Investments 211,000 0 0
Loss on Equity Method Investments $ 2,000 $ 21,000 $ 0