Annual report pursuant to Section 13 and 15(d)

Earnings per Share of Common Stock - Additional Information (Detail)

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Earnings per Share of Common Stock - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Weighted average number of OP units held by the non-controlling interest 461,614
Unvested shares of restricted common stock 598,815
Undistributed earnings allocated to the unvested restricted common stock or unvested restricted stock units $ 0