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Investments in Real Estate - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified |  | 1 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 Property | Oct. 11, 2012 Runaway Bay Apartments Property | Nov. 22, 2013 The Crossings at Ridgewood Apartments Property | Sep. 19, 2013 Berkshire Square Apartments Property | Dec. 31, 2013 Real Estate Investment Property
Real Estate Properties [Line Items] |  |  |  |  |
Number of multifamily property owned | 10 |  |  |  | 10
Number of units located with multifamily properties | 2,790 | 192 | 432 | 354 | 2,790
Purchased price of a property |  | $ 15,750 | $ 23,000 | $ 13,250 |
Mortgage amount obtained |  | 10,238 |  |  |
Cash paid for purchase of property |  | $ 5,512 |  |  |

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