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Amount of operating dividend income on securities.

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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The number of countries in which the entity operates as of balance sheet date.

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Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) country segment $ / shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)
Loans and leases receivable, net of deferred income	$ 1,279,494,000	$ 1,153,687,000
Loans held for sale	0	67,000
Restricted stock impairment charge		0	$ 0
Dividend income, operating	36,558	134,836
Allowance for unfunded loan commitments	$ 133,399	$ 117,685
Property, plant and equipment, depreciation methods	straight-line method based on the estimated useful lives of the assets
Weighted average useful life	4 years 4 months 17 days	5 years
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
Shares repurchased weighted average price \| $ / shares		$ 17.95
Wealth Book Business [Member]
Other intangible assets	$ 800,000
Weighted average useful life	4 years	5 years
Mortgage Company [Member]
Other intangible assets	$ 600,000
Weighted average useful life	4 years 11 months 1 day
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	$ 78,436
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member]
Loans and leases receivable, net of deferred income	70,600,000
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Impaired [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	$ 70,400,000
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Geographic Concentration Risk [Member]
Concentration risk, percentage	6.00%
Western Maryland And Northeastern West Virginia [Member] \| Commercial Rental Properties [Member] \| Geographic Concentration Risk [Member]
Concentration risk, percentage	21.00%
MARYLAND [Member]
Number of countries in which entity operates \| country	4
WEST VIRGINIA [Member]
Number of countries in which entity operates \| country	4