Earnings Per Share (Reconciliation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net income	$ 3,170	$ 3,105	$ 6,386	$ 6,268
Weighted average common shares outstanding
Basic	3,929,592	3,891,476	3,926,671	3,885,764
Effect of dilutive employee stock options	18,491	27,376	18,594	18,763
Diluted	3,948,083	3,918,852	3,945,265	3,904,527
Anti-dilutive options excluded from earnings per share calculation	48,500	9,000	48,500	14,000
Per Common Share Data:
Basic earnings per share	$ 0.81	$ 0.80	$ 1.63	$ 1.61
Diluted earnings per share	$ 0.80	$ 0.79	$ 1.62	$ 1.61

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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