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Subsequent Events - Additional Information (Detail) (USD $) | 12 Months Ended | 1 Months Ended |  | 1 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2013 Property | Dec. 31, 2012 | Aug. 13, 2013 Underwritten public offering | Jan. 29, 2014 Subsequent event Underwritten public offering | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio First Lien | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Oklahoma City's Northwest Sub Market Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Edmond, Oklahoma Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio One bedroom, one bathroom units Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Two bedroom, one bathroom units Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Two bedroom, two bathroom units Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio Three bedroom, two bathroom units Property | Feb. 28, 2014 Subsequent event Oklahoma Portfolio One bungalow house Property | Jan. 31, 2014 Subsequent event The Reserve at Eagle Ridge Property | Feb. 07, 2014 Subsequent event The Reserve at Eagle Ridge
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of multifamily fee simple interest property owned |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |
Number of multifamily property owned | 10 |  |  |  | 5 |  | 4 | 1 |  |  |  |  |  |  |
Number of units located with multifamily properties | 2,790 |  |  |  | 1,658 |  |  |  | 1,048 | 40 | 537 | 32 | 1 | 370 |
Payment for improvement of portfolio | $ 1,014,000 | $ 1,148,000 |  |  | $ 12,000,000 |  |  |  |  |  |  |  |  |  |
Purchased price of a property |  |  |  |  | 65,000,000 |  |  |  |  |  |  |  |  | 29,000,000 |
Current Interest Rate |  |  |  |  |  | 5.60% |  |  |  |  |  |  |  |  | 4.67%
Maturity date of mortgage loan |  |  |  |  |  | April 2016 |  |  |  |  |  |  |  |  |
Mortgage loan due amount on maturity |  |  |  |  |  | 43,600,000 |  |  |  |  |  |  |  |  |
Outstanding Principal |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,850,000
Interest payment period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Monthly
Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 01, 2014
Common stock sold |  |  | 4,000,000 | 8,050,000 |  |  |  |  |  |  |  |  |  |  |
Common stock offering price |  |  | $ 8.50 | $ 8.30 |  |  |  |  |  |  |  |  |  |  |
Gross Proceeds from offering | $ 31,153,000 | $ 3,193,000 | $ 34,000,000 | $ 66,800,000 |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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