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v3.21.1

Summary of Significant Accounting Policies (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) Subsidiaries Office Business shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 shares
Description of Business [Abstract] |  |  |
Number of subsidiaries | Subsidiaries | 1 |  |
Number of stores | Office | 21 |  |
Industry Segment Information [Abstract] |  |  |
Number of reported lines of business | Business | 2 |  |
Loans [Abstract] |  |  |
Loans held for sale | $ 70 | $ 0 |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 100.00% | 100.00% |
Due from Banks | $ 121,148 |  |
Foreclosed Assets [Abstract] |  |  |
Foreclosed assets | 49 | $ 540 |
Goodwill [Abstract] |  |  |
Goodwill impairment | 0 | 0 |
Mortgage Servicing Rights [Abstract] |  |  |
MSR assets | $ 458 | $ 357 |
Earnings Per Share [Abstract] |  |  |
Number of weighted average common shares outstanding (in shares) | shares | 4,787,446 | 4,767,279 | 4,725,971
Restrictions on Cash [Abstract] |  |  |
Restricted cash | $ 121,839 | $ 38,794 |
Unsecured [Member] |  |  |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 4.22% | 5.00% |
Equipment Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Equipment Furniture and Fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 8 years |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 7 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 39 years |  |
Residential Real Estate Loans [Member] |  |  |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 36.00% | 40.15% |
Commercial Real Estate Loans [Member] |  |  |
Allowance for Loan Losses [Abstract] |  |  |
Period of actual loss history experienced | 3 years |  |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 29.86% | 28.75% |
Consumer Loans [Member] |  |  |
Allowance for Loan Losses [Abstract] |  |  |
Period of actual loss history experienced | 3 years |  |
Loans maturity period | 6 years |  |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 15.56% | 18.16% |
Commercial and Industrial Loans [Member] |  |  |
Allowance for Loan Losses [Abstract] |  |  |
Period of actual loss history experienced | 5 years |  |
Concentrations of Credit Risk [Abstract] |  |  |
% Total Loans | 18.58% | 12.94% |

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