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Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Expected amortization expense on mortgage servicing rights      
2024 $ 570    
2025 490    
2026 420    
2027 360    
2028 300    
Residential mortgage loans      
Mortgage Servicing Rights      
Unpaid principal balance $ 806,050 $ 848,960 $ 883,900