Earnings Per Share (Details)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of the denominators used in the calculation of basic and diluted earnings per share [Abstract]
Average share outstanding for basic earnings per share (in shares)	14,838,767	14,818,354	14,782,624
Dilutive effect of share equivalents (in shares)	29,482	0	16,078
Average shares outstanding for diluted earnings per share (in shares)	14,868,249	14,818,354	14,798,702
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive effect of shares excluded from calculation of average shares outstanding (in shares)	19,983

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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+ Details

- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ 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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+ Details