Significant Accounting Policies (Schedule Of Weighted Average Number Of Shares Of Common Stock Outstanding Used For Basic And Diluted Calculations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Significant Accounting Policies [Abstract]
Net income available to common shareholders	$ 2,599	$ 2,102
Weighted average shares outstanding (basic)	4,485	4,417
Effect of dilutive stock options	83	26
Weighted average shares outstanding (diluted)	4,568	4,443
Basic earnings per common share	$ 0.58	$ 0.48
Diluted earnings per common share	$ 0.57	$ 0.47
Anti-dilutive stock options and common stock warrants	28	87

Significant Accounting Policies (Schedule Of Weighted Average Number Of Shares Of Common Stock Outstanding Used For Basic And Diluted Calculations) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Significant Accounting Policies [Abstract]

Net income available to common shareholders

$ 2,599

$ 2,102

Weighted average shares outstanding (basic)

4,485

4,417

Effect of dilutive stock options

Weighted average shares outstanding (diluted)

4,568

4,443

Basic earnings per common share

$ 0.58

$ 0.48

Diluted earnings per common share

$ 0.57

$ 0.47

Anti-dilutive stock options and common stock warrants

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

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-URI http://asc.fasb.org/extlink&oid=6510752

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-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6505113

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-Name Statement of Financial Accounting Standard (FAS)

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+ Details

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 9

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-Number 210

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+ Details

- Definition

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.

+ References+ Details

- Definition

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.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Weighted-Average Number of Common Shares Outstanding

-URI http://asc.fasb.org/extlink&oid=6528421

+ Details