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Off-Balance Sheet Activities - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Amortization $ 691 $ 634 $ 531
Capital Contributions, Small Business Investment Corporation      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Capital contributions 14,500 11,800  
Small Business Investment Corporations      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Capital contributions 8,000 3,700  
Capital Contributions, Low Income Housing Partnerships      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Capital contributions 5,300 6,000  
Low Income Housing Partnerships      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Capital contributions $ 2,100 $ 3,600  
Minimum      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Fixed Interest rate loan 0.56% 1.24%  
Fixed rate loan maturities range 6 months 4 months  
Maximum      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Fixed Interest rate loan 9.00% 18.00%  
Fixed rate loan maturities range 31 years 35 years