Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 562	$ 518	$ 382
Grant date fair value of vested Restricted Stock	547	415	375
Vest date fair value of vested Restricted Stock	556	$ 473	$ 398
Unrecognized compensation cost related to unvested Restricted Stock	$ 162
Weighted-average period for unrecognized compensation cost to be recognized	1 year
Restricted Stock [Member] \| Outside Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service period of grants	9 months
Restricted Stock [Member] \| Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service period of grants	3 years
Deferred Compensation Arrangement with Individual, Requisite Service Period	1 year

Deferred Compensation Arrangement Grant Date Fair Value Of Vested Restricted Stock

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- Definition

Deferred Compensation Arrangement Vest Date Fair Value Of Vested Restricted Stock

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- Definition

Deferred Compensation Arrangements Unrecognized Compensation Cost Related To Unvested Restricted Stock

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- Definition

Amount of expense recognized from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments), awarded to key employees or individuals. Excludes amount related to plans that cover generally all employees (for example, but not limited to, qualified pension plans).

+ References

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- Definition

Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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