Summary of Significant Accounting Policies (Details 2)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share Basic And Diluted [Line Items]
Weighted average number of common shares outstanding	15,121,212	13,314,989	11,321,498
Less: Unvested restricted stock	(238,626)	(249,082)	(250,180)
Weighted average number of common shares outstanding used in basic earnings per share	14,882,586	13,065,907	11,071,318
Weighted average number of common shares outstanding used in basic earnings per share	14,882,586	13,065,907	11,071,318
Effect of dilutive securities: restricted stock	84,309	91,598	65,592
Weighted average number of common shares outstanding used in diluted earnings per share	14,966,895	13,157,505	11,136,910

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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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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This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

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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.

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Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends.

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