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Shareholders' Equity (Changes In Shares Of Common Stock) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Shareholders Equity [Line Items]
Treasury stock, beginning balance	279,461
Shares issued, beginning balance	14,397,509	14,161,597
Shares issued for the SDN acquisition		235,912
Restricted stock awards issued
Restricted stock awards forfeited
Stock options exercised
Treasury stock purchases
Stock awards
Treasury stock, ending balance	208,674
Shares issued, ending balance	14,397,509	14,397,509
Common Stock [Member]
Shareholders Equity [Line Items]
Shares outstanding, beginning balance	14,118,048	13,829,355
Shares issued for the SDN acquisition		235,912
Restricted stock awards issued	59,834	43,242
Restricted stock awards forfeited	(3,041)	(13,609)
Stock options exercised	13,422	8,467
Treasury stock purchases	(1,791)	(9,102)
Stock awards	$ 2,363
Shares outstanding, ending balance	14,188,835	14,094,265
Treasury Stock [Member]
Shareholders Equity [Line Items]
Treasury stock, beginning balance	279,461	332,242
Restricted stock awards issued	(59,834)	(43,242)
Restricted stock awards forfeited	3,041	13,609
Stock options exercised	(13,422)	(8,467)
Treasury stock purchases	1,791	9,102
Stock awards	$ (2,363)
Treasury stock, ending balance	208,674	303,244

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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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