Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.5.0.2
Subsequent Events - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Oct. 13, 2016
USD ($)
a
option
Oct. 11, 2016
Oct. 05, 2016
USD ($)
Property
Jul. 05, 2016
USD ($)
Jul. 01, 2016
Farm
Sep. 30, 2016
USD ($)
a
Sep. 30, 2015
USD ($)
a
Sep. 30, 2016
USD ($)
a
Farm
Sep. 30, 2015
USD ($)
a
Dec. 31, 2015
USD ($)
Subsequent Event [Line Items]                    
Note payable, outstanding           $ 190,379,624   $ 190,379,624   $ 141,678,935
Rental income           $ 4,467,217 $ 3,080,240 $ 12,388,303 $ 8,483,023  
Number of farms acquired | Farm               6    
Area of real estate property | a           33,800 14,880 33,800 14,880  
Settlement payment       $ 164,000            
Settlement interest       $ 4,000            
2016 New Real Estate Activity [Member]                    
Subsequent Event [Line Items]                    
Rental income           $ 769,171   $ 1,474,688    
Area of real estate property | a           16,988   16,988    
Total Purchase Price               $ 81,557,106    
Annualized straight-line cash rent               $ 4,331,713    
Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Debt instrument, fee amount     $ 225,000              
Two Thousand Sixteen MetLife Term Note [Member]                    
Subsequent Event [Line Items]                    
Loans to value ratios percentage               58.00%    
Two Thousand Sixteen MetLife Term Note [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Note payable, outstanding     21,600,000.0              
Line of credit, carrying value     $ 50,000,000              
Line of credit facility, unused capacity, commitment fee percentage     0.20%              
Properties pledged as collateral | Property     3              
Line of credit, increase in borrowing capacity     $ 28,300,000              
Loans to value ratios percentage     60.00%              
MetLife Line of Credit [Member]                    
Subsequent Event [Line Items]                    
Maturity Date               Apr. 05, 2024    
MetLife Line of Credit [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Repayments of long-term debt     $ 21,000,000              
Two Thousand Sixteen MetLife Line of Credit [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Line of credit, carrying value     $ 25,000,000              
Two Thousand Fifteen MetLife Term Note [Member]                    
Subsequent Event [Line Items]                    
Stated interest rate           19.00%   19.00%    
Two Thousand Fifteen MetLife Term Note [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Debt instrument extension of fixed rate term   76 months                
Extension of draw period term   1 year                
Farm Credit CFL Mortgage Notes Payable [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Repayment of loans $ 3,900,000                  
Maturity Date Nov. 01, 2041                  
California [Member]                    
Subsequent Event [Line Items]                    
Number of farms acquired | Farm         1          
California [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Area of real estate property | a 197                  
Total Purchase Price $ 6,500,000                  
Lease expiration period 10 years                  
Extendable lease period 5 years                  
Annualized straight-line cash rent $ 325,000                  
Central Avenue [Member] | Subsequent Event [Member] | 2016 New Real Estate Activity [Member] | Fresno, CA [Member]                    
Subsequent Event [Line Items]                    
Lessee leasing arrangement lease renewal options | option 2                  
London Interbank Offered Rate (LIBOR) [Member] | Two Thousand Sixteen MetLife Line of Credit [Member] | Subsequent Event [Member]                    
Subsequent Event [Line Items]                    
Percentage added to LIBOR     2.25%              
Line of credit facility, unused capacity, commitment fee percentage     0.20%              
Minimum [Member] | Farm Credit CFL Mortgage Notes Payable [Member]                    
Subsequent Event [Line Items]                    
Maturity Date               Oct. 01, 2016