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Loans and Allowance for Loan Losses - Additional Information (Details)
3 Months Ended
Mar. 31, 2022
USD ($)
loan
Mar. 31, 2021
USD ($)
loan
Dec. 31, 2021
USD ($)
Loans And Leases Receivable Disclosure [Line Items]      
Loans, related parties $ 0   $ 0
Recorded investment in troubled debt restructurings 305,000   313,000
Specific reserves to loans classified as TDRs $ 305,000   313,000
Loans identified as TDRs | loan 0 0  
Financing receivable, modifications, subsequent default, recorded investment $ 0 $ 0  
Gross loans receivable 1,428,410,000   1,314,019,000
SBA PPP Loan      
Loans And Leases Receivable Disclosure [Line Items]      
Total loans funded 154,500,000    
Loans forgiven 137,000,000    
Home mortgage      
Loans And Leases Receivable Disclosure [Line Items]      
Gross loans receivable 266,465,000   173,303,000
SBA loans—non-real estate      
Loans And Leases Receivable Disclosure [Line Items]      
Gross loans receivable 35,895,000   $ 55,759,000
SBA loans—non-real estate | SBA PPP Loan      
Loans And Leases Receivable Disclosure [Line Items]      
Gross loans receivable $ 22,100,000    
Payment Deferral | Financing Receivable | Financing Receivable Concentration Risk      
Loans And Leases Receivable Disclosure [Line Items]      
Concentration risk, percentage 0.30%