Shareholders Equity [Line Items]

No definition available.

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- Definition

Stock released during period shares restricted stock units.

+ References

No definition available.

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- Definition

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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- Definition

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

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

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

+ References

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- Definition

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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- Definition

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.

+ References

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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Shareholders' Equity (Changes in Shares of Common Stock) (Details) - shares	3 Months Ended						9 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Dec. 31, 2020
Shareholders Equity [Line Items]
Treasury stock, beginning balance			57,630				57,630
Shares issued, beginning balance	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556
Treasury stock purchases	0						238,439	0
Treasury stock, ending balance	257,475						257,475	57,630
Shares issued, ending balance	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556	16,099,556
Common Stock [Member]
Shareholders Equity [Line Items]
Shares outstanding, beginning balance	15,841,929	15,828,899	16,041,926	16,037,585	16,019,384	16,002,899	16,041,926	16,002,899
Shares issued for Landmark Group acquisition			12,831
Restricted stock units released	250		18,819			22,921
Restricted stock awards issued		9,350			12,798
Stock awards		3,680			5,403
Treasury stock purchases	(98)		(244,677)			(6,436)
Shares outstanding, ending balance	15,842,081	15,841,929	15,828,899	16,037,585	16,037,585	16,019,384	15,842,081	16,041,926
Treasury Stock [Member]
Shareholders Equity [Line Items]
Treasury stock, beginning balance	257,627	270,657	57,630	61,971	80,172	96,657	57,630	96,657
Shares issued for Landmark Group acquisition			(12,831)
Restricted stock units released	(250)		(18,819)			(22,921)
Restricted stock awards issued		(9,350)			(12,798)
Stock awards		(3,680)			(5,403)
Treasury stock purchases	98		244,677			6,436
Treasury stock, ending balance	257,475	257,627	270,657	61,971	61,971	80,172	257,475	57,630