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Investments in Real Estate - Additional Information (Detail) |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 25, 2017 USD ($) Property | Sep. 30, 2017 USD ($) Property | Dec. 31, 2016 USD ($)
Real Estate Properties [Line Items] |  |  |
Number of multifamily properties owned | Property |  | 50 |
Number of units located with multifamily properties | Property |  | 13,729 |
Real estate held for sale | $ |  | $ 22,031,000 | $ 60,786,000
Purchase price allocation adjustments | $ |  | $ 0 |
Number of property acquired | Property |  | 1,621 |
Acquisition of real estate properties | $ |  | $ 169,156,000 |
Baton Rouge, LA | Live Oak Trace | Subsequent Event |  |  |
Real Estate Properties [Line Items] |  |  |
Number of property acquired | Property | 264 |  |
Acquisition of real estate properties | $ | $ 28,501,000 |  |

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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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