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Shareholders' Equity (Changes in Shares of Common Stock) (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Shareholders Equity [Line Items]
Treasury stock, beginning balance	354,103
Shares issued, beginning balance	16,099,556	16,099,556
Treasury stock purchases	766,447
Treasury stock, ending balance	759,555	354,103
Shares issued, ending balance	16,099,556	16,099,556
Common Stock [Member]
Shareholders Equity [Line Items]
Shares outstanding, beginning balance	15,745,453	16,041,926
Shares issued for Landmark Group acquisition		12,831
Restricted stock awards issued	12,242	9,350
Restricted stock units released	55,912	24,069
Stock awards	7,856	5,972
Treasury stock purchases	(481,462)	(348,695)
Shares outstanding, ending balance	15,340,001	15,745,453
Treasury Stock [Member]
Shareholders Equity [Line Items]
Treasury stock, beginning balance	354,103	57,630
Shares issued for Landmark Group acquisition		(12,831)
Restricted stock awards issued	(12,242)	(9,350)
Restricted stock units released	(55,912)	(24,069)
Stock awards	(7,856)	(5,972)
Treasury stock purchases	481,462	348,695
Treasury stock, ending balance	759,555	354,103

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of shares of stock issued during the period pursuant to acquisitions.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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