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Nature of Business and Significant Accounting Policies (Details)
$ in Thousands
12 Months Ended
Jan. 01, 2020
USD ($)
Dec. 31, 2020
USD ($)
location
Dec. 31, 2019
USD ($)
Nature Of Business And Significant Accounting Policies [Line Items]      
Number of branches | location   11  
Number of representative offices | location   2  
Percentage of credit extension   80.00%  
Threshold percentage for loan amount against the original appraised value of the property   90.00%  
Threshold percentage for private mortgage insurance required for that portion of loan   80.00%  
Amount of consumer mortgages and loans secured by residential real estate properties in process of foreclosure   $ 636 $ 781
Amortization method purchased customer accounts   straight-line basis  
Real Estate Acquired Through Foreclosure   $ 139 1,417
Useful life of purchased customer accounts   13 years  
Lease, Practical Expedients, Package [true false] true    
Other assets   $ 8,825 5,209
Accrued expenses and other liabilities   18,643 11,156
Operating Lease, Right-of-Use Asset   $ 6,289  
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]   Other assets  
Operating Lease, Liability   $ 6,289  
Operating Lease, Liability, Statement of Financial Position [Extensible List]   Accrued expenses and other liabilities  
Residential Real Estate      
Nature Of Business And Significant Accounting Policies [Line Items]      
Real Estate Acquired Through Foreclosure   $ 0 935
Commercial real estate      
Nature Of Business And Significant Accounting Policies [Line Items]      
Real Estate Acquired Through Foreclosure   $ 139 $ 482
Accounting Standards Update 2016-02 | Scenario Forecast Adjustment      
Nature Of Business And Significant Accounting Policies [Line Items]      
Other assets $ 6,700    
Accrued expenses and other liabilities $ 6,700