Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Loans and leases receivable, net of deferred income	$ 1,167,812,000	$ 1,050,369,000
Loans held for sale	3,546,000	1,749,000
Restricted stock impairment charge	0	0
Dividend income, operating	212,252	290,415
Allowance for unfunded loan commitments	$ 109,559	$ 78,463
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	$ 0.01	$ 0.01
Stock repurchased during period, shares	145,291
Shares repurchased weighted average price	$ 18.96
Trust Department [Member]
Stock repurchased during period, shares	194,124
Shares repurchased weighted average price	$ 13.49
Liberty Mews Limited Partnership [Member]
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership 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
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member]
Concentration risk, percentage	10.00%
Loans and leases receivable, net of deferred income	$ 117,000,000.0
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Nonperforming Financing Receivable [Member]
Loans and leases receivable, net of deferred income	400,000
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Impaired [Member]
Loans and leases receivable, net of deferred income	2,000,000.0
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Performing According to Modified Terms [Member]
Loans and leases receivable, net of deferred income	1,100,000
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Nonperforming Troubled Debt Restructuring [Member]
Loans and leases receivable, net of deferred income	500,000
Western Maryland And Northeastern West Virginia [Member] \| Loans Receivable [Member] \| Performing Financing Receivable [Member]
Loans and leases receivable, net of deferred income	$ 115,000,000.0
Western Maryland And Northeastern West Virginia [Member] \| Commercial Rental Properties [Member]
Concentration risk, percentage	15.00%

Assessed risk of loss on unfunded commercial lending commitments and letters of credit.

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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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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