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Borrowings - Summary of Mortgage Note Payable and Line of Credit (Detail) - USD ($) | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 | Aug. 22, 2016 | Dec. 31, 2015 | Dec. 05, 2014
Debt Instrument [Line Items] |  |  |  |
Principal Outstanding | $ 191,480,127 |  | $ 142,733,157 |
Debt issuance costs | (1,100,503) |  | (1,054,222) |
Total mortgage notes and bonds payable, net | $ 190,379,624 |  | 141,678,935 |
MetLife Mortgage Notes Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuer | MetLife(2) |  |  |
Date(s) of Issuance | May 09, 2014 |  |  |
Amount | $ 100,000,000 |  |  |
Maturity Date | Jan. 05, 2029 |  |  |
Principal Outstanding | $ 85,939,466 |  | $ 87,470,194 |
Stated Interest Rate | 3.35% |  | 3.35% |
Undrawn Commitment | $ 12,529,806 |  | $ 12,529,806 |
MetLife Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuer | MetLife(2) |  |  |
Date(s) of Issuance | May 09, 2014 |  |  |
Amount | $ 25,000,000 |  |  |
Maturity Date | Apr. 05, 2024 |  |  |
Principal Outstanding | $ 22,500,000 |  | $ 100,000 |
Stated Interest Rate | 2.90% |  | 2.58% |
Undrawn Commitment | $ 2,500,000 |  | $ 24,900,000 |
Farm Credit CFL Mortgage Notes Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuer | Farm Credit(5) |  |  |
Amount | $ 34,587,880 |  |  |
Principal Outstanding | $ 33,263,161 |  | $ 21,456,963 |
Stated Interest Rate | 3.50% |  | 3.42% |
Undrawn Commitment | $ 0 |  | $ 0 |
Farmer Mac Bonds Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuer | Farmer Mac |  |  |
Amount | $ 125,000,000 | $ 1,020,000 |  | $ 75,000,000
Principal Outstanding | $ 49,777,500 |  | $ 33,706,000 |
Stated Interest Rate | 2.94% | 2.87% | 2.87% |
Undrawn Commitment | $ 74,743,000 |  | $ 41,294,000 |
Minimum [Member] | Farm Credit CFL Mortgage Notes Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Date(s) of Issuance | Sep. 19, 2014 |  |  |
Maturity Date | Oct. 01, 2016 |  |  |
Minimum [Member] | Farmer Mac Bonds Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Date(s) of Issuance | Dec. 11, 2014 |  |  |
Maturity Date | Dec. 22, 2016 |  |  |
Maximum [Member] | Farm Credit CFL Mortgage Notes Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Date(s) of Issuance | Nov. 02, 2015 |  |  |
Maturity Date | Nov. 01, 2040 |  |  |
Maximum [Member] | Farmer Mac Bonds Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Date(s) of Issuance | Mar. 03, 2016 |  |  |
Maturity Date | Feb. 24, 2023 |  |  |

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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