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Other Real Estate Owned - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Real Estate [Line Items]                
Foreclosed real estate properties recorded as result of obtaining physical possession of property $ 3,033,000 $ 8,150,000 $ 3,033,000 $ 8,150,000 $ 4,417,000 $ 6,350,000 $ 8,652,000 $ 9,896,000
Residential consumer mortgage loans in process of foreclosure 3,100,000   3,100,000     3,300,000    
Proceeds from sale of internally financed sales of OREO 0 $ 0 0 $ 0        
Residential Real Estate                
Real Estate [Line Items]                
Foreclosed real estate properties recorded as result of obtaining physical possession of property $ 0   $ 0     $ 0