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Summary of Significant Accounting Policies (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) country segment $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares
Loans and leases receivable, net of deferred income | $ 1,153,687,000 | $ 1,167,812,000
Loans held for sale | 67,000 | 3,546,000
Restricted stock impairment charge | 0 | 0
Dividend income, operating | 134,836 | 212,252
Allowance for unfunded loan commitments | $ 117,685 | $ 109,559
Property, plant and equipment, depreciation methods | straight-line method based on the estimated useful lives of the assets |
Common stock, par or stated value per share | $ / shares | $ 0.01 | $ 0.01
Number of operating segments | segment | 1 |
Stock repurchased during period, shares | shares | 400,000 | 145,291
Shares repurchased weighted average price | $ / shares | $ 17.95 | $ 18.96
Other Intangible Assets [Member] |  |
Other intangible assets | $ 1,000,000.0 |
Weighted average useful life | 5 years |
Liberty Mews Limited Partnership [Member] |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest | 99.90% |
MCC FUBT Fund LLC [Member] |  |
Percentage of non voting membership interest | 99.90% |
Furniture and Equipment [Member] |  |
Property, plant and equipment, useful life | 20 years |
Maximum [Member] | Building [Member] |  |
Property, plant and equipment, useful life | 31 years 6 months |
Minimum [Member] | Building [Member] |  |
Property, plant and equipment, useful life | 10 years |
Minimum [Member] | Furniture and Equipment [Member] |  |
Property, plant and equipment, useful life | 3 years |
Long-Term Incentive Plan [Member] |  |
Stock based compensation expense | $ 98,842 | $ 124,970
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] |  |
Loans and leases receivable, net of deferred income | 128,100,000 |
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] | Impaired [Member] |  |
Loans and leases receivable, net of deferred income | 600,000 |
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] | Performing According to Modified Terms [Member] |  |
Loans and leases receivable, net of deferred income | 400,000 |
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] | Nonperforming Troubled Debt Restructuring [Member] |  |
Loans and leases receivable, net of deferred income | 200,000 |
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] | Performing Financing Receivable [Member] |  |
Loans and leases receivable, net of deferred income | $ 127,500,000 |
Western Maryland And Northeastern West Virginia [Member] | Loans Receivable [Member] | Geographic Concentration Risk [Member] |  |
Concentration risk, percentage | 11.00% |
Western Maryland And Northeastern West Virginia [Member] | Commercial Rental Properties [Member] | Geographic Concentration Risk [Member] |  |
Concentration risk, percentage | 16.00% |
MARYLAND [Member] |  |
Number of countries in which entity operates | country | 4 |
WEST VIRGINIA [Member] |  |
Number of countries in which entity operates | country | 4 |

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