Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Detail)

v3.3.0.814
Borrowings - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Sep. 03, 2015
Aug. 20, 2015
Jun. 25, 2015
May. 08, 2015
Jan. 05, 2015
Sep. 30, 2015
Jun. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Apr. 09, 2015
Mar. 10, 2015
May. 09, 2014
Debt Instrument [Line Items]                              
Weighted average interest rate on borrowings             3.40%   3.60% 3.50% 3.60%        
Note payable, outstanding $ 140,085,394           $ 140,085,394     $ 140,085,394   $ 86,417,361      
Line of credit, carrying value 5,000,000           5,000,000     5,000,000   4,000,000      
Undrawn Commitment 77,714,806           77,714,806     77,714,806   $ 125,993,002      
Bear Mountain [Member]                              
Debt Instrument [Line Items]                              
Notes payable, drew   $ 21,100,000                          
Fixed interest rate payment period   5 years                          
MetLife Mortgage Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Debt instrument face amount $ 100,000,000           $ 100,000,000     $ 100,000,000         $ 100,000,000
Maturity Date                   Jan. 05, 2029          
Debt instrument, fixed rate of interest 3.35% 3.35%         3.35%     3.35%   3.61%     3.50%
Commitment fee on undrawn amount 0.20%           0.20%     0.20%          
Period for interest rate adjustment                   3 years          
Expiration date of commitment                   Dec. 31, 2016          
Extension of fixed-rate term   44 months                          
Extended fixed-rate term maturity year and month                   2020-08          
Extension of interest-only portion term   6 months                          
Extended interest-only portion maturity year and month                   2016-07          
Extension of draw period term   1 year                          
Extended draw period maturity year and month                   2017-12          
Note payable, outstanding $ 87,470,194           $ 87,470,194     $ 87,470,194   $ 66,331,998      
Line of credit, carrying value 5,000,000           5,000,000     5,000,000          
Undrawn Commitment 12,529,806           12,529,806     12,529,806   $ 33,668,002      
MetLife Mortgage Notes Payable [Member] | As Previously Reported [Member]                              
Debt Instrument [Line Items]                              
Reduction in interest rate   0.26%                          
Blended fixed interest rate   3.61%                          
MetLife Mortgage Notes Payable [Member] | Bear Mountain [Member]                              
Debt Instrument [Line Items]                              
Debt instrument, fixed rate of interest   3.35%                          
Metlife Line of Credit [Member]                              
Debt Instrument [Line Items]                              
Debt instrument face amount $ 25,000,000           $ 25,000,000     $ 25,000,000         $ 25,000,000
Maturity Date                   Apr. 05, 2024          
Debt instrument, fixed rate of interest 2.58%           2.58%     2.58%   2.75%      
Commitment fee on undrawn amount 0.20%           0.20%     0.20%          
Debt instrument interest rate                   Three-month LIBOR plus a spread of 2.50%          
Percentage added to LIBOR   2.25%               2.50%          
Minimum annualized rate   2.50%               2.75%          
Reduction in interest rate spread, basis points   0.25%                          
Reduction in floor interest rate, basis points   0.25%                          
Note payable, outstanding $ 5,000,000           $ 5,000,000     $ 5,000,000   $ 4,000,000      
Line of credit, carrying value 5,000,000           5,000,000     5,000,000          
Undrawn Commitment 20,000,000           20,000,000     20,000,000   $ 21,000,000      
Remaining borrowing capacity $ 2,000,000           $ 2,000,000     $ 2,000,000          
Metlife Line of Credit [Member] | As Previously Reported [Member]                              
Debt Instrument [Line Items]                              
Percentage added to LIBOR   2.50%                          
Farm Credit Interest Only Loans [Member]                              
Debt Instrument [Line Items]                              
Debt instrument, fixed rate of interest 3.20%           3.20%     3.20%          
Aggregate notes payable                         $ 3,300,000 $ 3,300,000  
Expiration term                   5 years          
Total borrowings from credit notes payable $ 17,800,000           $ 17,800,000     $ 17,800,000          
Farm Credit Additional Loan[Member]                              
Debt Instrument [Line Items]                              
Additional borrowings         $ 2,600,000                    
Farm Credit Additional Loan[Member] | Through April 30, 2018 [Member]                              
Debt Instrument [Line Items]                              
Debt instrument, fixed rate of interest 2.90%           2.90%     2.90%          
Farm Credit Additional Loan[Member] | After April 30, 2018 [Member]                              
Debt Instrument [Line Items]                              
Percentage added to LIBOR                   3.00%          
Credit notes payable interest rate there after, Description                   LIBOR plus 3.00%          
Farmer Mac Bonds Payable [Member]                              
Debt Instrument [Line Items]                              
Debt instrument face amount $ 75,000,000           $ 75,000,000     $ 75,000,000          
Debt instrument, fixed rate of interest 2.85%   2.38% 2.60%   3.25% 2.85%     2.85%   3.25%      
Note payable, outstanding $ 29,815,000           $ 29,815,000     $ 29,815,000   $ 3,675,000      
Undrawn Commitment 45,185,000           45,185,000     $ 45,185,000   $ 71,325,000      
Additional borrowings 29,800,000   $ 3,300,000 $ 9,400,000   $ 10,200,000                  
Expiration term     3 years 3 years   5 years                  
Farm Credit Mortgage Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Reduction in interest rate               12.70%   12.70%   12.70%      
Debt instrument face amount $ 18,425,880           $ 18,425,880     $ 18,425,880          
Debt instrument, fixed rate of interest 3.38%           3.38%     3.38%   3.53%      
Note payable, outstanding $ 17,800,200           $ 17,800,200     $ 17,800,200   $ 12,410,363      
Metlife Line of Credit and Notes Payable [Member]                              
Debt Instrument [Line Items]                              
Undrawn Commitment 32,500,000           32,500,000     32,500,000          
Mortgage Note Payable [Member] | Mortgage Notes and Bonds Payable [Member]                              
Debt Instrument [Line Items]                              
Aggregate fair value of mortgage notes payable outstanding 135,400,000           135,400,000     135,400,000          
Mortgage notes payable, carrying value $ 135,100,000           $ 135,100,000     $ 135,100,000