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Real Estate and Lease Intangibles - Summary of Future Lease Expirations by Year for Properties (Detail) |  | 12 Months Ended
--- | --- | ---
Feb. 10, 2015 USD ($) | Dec. 31, 2015 USD ($) a Lease | Dec. 31, 2014 USD ($) a | Dec. 31, 2013 USD ($)
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 38 |  |
Expiring Leased Acreage | a |  | 16,810 | 8,039 |
% of Total Acreage |  | 100.00% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ | $ 73,749 | $ 11,888,091 | $ 7,170,318 | $ 4,027,687
% of Total Rental Revenue |  | 100.00% |  |
2016 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 4 |  |
Expiring Leased Acreage | a |  | 368 |  |
% of Total Acreage |  | 2.20% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 816,811 |  |
% of Total Rental Revenue |  | 6.90% |  |
2017 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 8 |  |
Expiring Leased Acreage | a |  | 647 |  |
% of Total Acreage |  | 3.90% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 2,160,141 |  |
% of Total Rental Revenue |  | 18.20% |  |
2018 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 5 |  |
Expiring Leased Acreage | a |  | 2,929 |  |
% of Total Acreage |  | 17.40% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 581,084 |  |
% of Total Rental Revenue |  | 4.90% |  |
2019 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 0 |  |
Expiring Leased Acreage | a |  | 0 |  |
% of Total Acreage |  | 0.00% |  |
% of Total Rental Revenue |  | 0.00% |  |
2020 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 6 |  |
Expiring Leased Acreage | a |  | 3,888 |  |
% of Total Acreage |  | 23.10% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 3,763,641 |  |
% of Total Rental Revenue |  | 31.60% |  |
2021 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 2 |  |
Expiring Leased Acreage | a |  | 691 |  |
% of Total Acreage |  | 4.10% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 29,970 |  |
% of Total Rental Revenue |  | 0.20% |  |
Thereafter [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Number of Expiring Leases | Lease |  | 13 |  |
Expiring Leased Acreage | a |  | 8,287 |  |
% of Total Acreage |  | 49.30% |  |
Rental Revenue for the Year Ended December 31, 2015 | $ |  | $ 4,536,444 |  |
% of Total Rental Revenue |  | 38.20% |  |

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