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Real Estate and Intangible Assets - Summary of Total Operating Revenues and Earnings Recognized on Properties Acquired (Detail) - USD ($) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 23, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Real Estate Properties [Line Items] |  |  |  |  |
Rental revenue |  | $ 2,780,456 | $ 1,561,291 | $ 5,402,783 | $ 3,056,927
Spring Valley [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Rental revenue | $ 327,904 |  |  |  |
2015 New Real Estate Activity [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Rental revenue |  | 257,543 |  | 457,976 |
Earnings |  | 122,360 |  | $ 226,597 |
2015 New Real Estate Activity [Member] | Espinosa Road [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  | Jan. 05, 2015 |
Rental revenue |  | 194,585 |  | $ 380,802 |
Earnings |  | 101,813 |  | $ 198,871 |
2015 New Real Estate Activity [Member] | Parrish Road [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  | Mar. 10, 2015 |
Rental revenue |  | 62,958 |  | $ 77,174 |
Earnings |  | 21,770 |  | $ 28,949 |
2015 New Real Estate Activity [Member] | Immokalee Exchange [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  | Jun. 25, 2015 |
Earnings |  | $ (1,223) |  | $ (1,223) |
2014 New Real Estate Activity [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Rental revenue |  |  | 33,800 |  | 33,800
Earnings |  |  | 17,564 |  | $ 17,564
2014 New Real Estate Activity [Member] | Collins Road [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  |  | May 30, 2014
Rental revenue |  |  | 16,072 |  | $ 16,072
Earnings |  |  | 8,278 |  | $ 8,278
2014 New Real Estate Activity [Member] | Spring Valley [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  |  | Jun. 13, 2014
Rental revenue |  |  | 13,545 |  | $ 13,545
Earnings |  |  | 8,335 |  | $ 8,335
2014 New Real Estate Activity [Member] | McIntosh Road [Member] |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Acquisition Date |  |  |  |  | Jun. 20, 2014
Rental revenue |  |  | 4,183 |  | $ 4,183
Earnings |  |  | $ 951 |  | $ 951

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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Acquisition Date -URI http://asc.fasb.org/extlink&oid=6919109 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e848-128460 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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