Summary of Significant Accounting Policies (Details 3) - shares	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share Basic And Diluted [Line Items]
Weighted average number of common shares outstanding	31,969,749	28,792,158	31,342,354	27,207,725
Less: Unvested restricted stock	(210,824)	(219,136)	(210,824)	(219,136)
Weighted average number of common shares outstanding used in basic earnings per share	31,758,925	28,573,022	31,131,530	26,988,589
Weighted average number of common shares outstanding used in basic earnings per share	31,758,925	28,573,022	31,131,530	26,988,589
Effect of dilutive securities: restricted stock	80,211	83,662	71,855	80,763
Weighted average number of common shares outstanding used in diluted earnings per share	32,287,352	28,656,684	31,471,251	27,069,352
Operating Partnership Units ("OP Units")	347,619	347,619	347,619	347,619
Weighted average number of common shares and OP Units outstanding used in diluted earnings per share	32,634,971	29,004,303	31,818,870	27,416,971
Forward Contracts One [Member]
Earnings Per Share Basic And Diluted [Line Items]
Effect of dilutive securities: forward equity offering	439,761	0	265,048	0
Forward Contracts Two [Member]
Earnings Per Share Basic And Diluted [Line Items]
Effect of dilutive securities: forward equity offering	8,455	0	2,818	0

The Weighted average number of common shares and OP Units outstanding

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Additional shared included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity forward arrangements using the reverse treasury stock method.

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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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- Definition

Weighted average number of general partnership units outstanding determined by relating the portion of time within a reporting period that general partnership units have been outstanding to the total time in that period.

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- 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.

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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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