Gladstone Commercial Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Parenthetical) (Detail)

Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Anti-dilutive convertible senior common shares excluded from calculation of diluted earnings per share	428,509	238,126	121,891

- 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.

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