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Organization - Additional Information (Detail) $ / shares in Units, $ in Billions | Jun. 30, 2015 Property | May. 11, 2015 USD ($) Property $ / shares
--- | --- | ---
Class of Stock [Line Items] |  |
Number of properties | 31 |
Number of units | 9,055 |
Trade Street Residential, Inc. |  |
Class of Stock [Line Items] |  |
Business Acquisition Share Price | $ / shares |  | $ 7.60
Number of properties |  | 50
Number of units |  | 14,044
Trade Street Residential, Inc. | Minimum |  |
Class of Stock [Line Items] |  |
Expected total capitalization after merger | $ |  | $ 1.4

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