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Real Estate and Lease Intangibles - Summary of Future Lease Expirations by Year for Properties (Parenthetical) (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Feb. 10, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Rental revenue | $ 73,749 | $ 11,888,091 | $ 7,170,318 | $ 4,027,687
2016 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Rental revenue |  | 816,811 |  |
2016 [Member] | Surface Area Lease Property [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Rental revenue |  | 32,064 |  |
2016 [Member] | Residential Lease Property [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Rental revenue |  | $ 0 |  |

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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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