Annual report pursuant to Section 13 and 15(d)

Borrowings - Summary of Mortgage Note Payable and Line of Credit (Parenthetical) (Detail)

v3.3.1.900
Borrowings - Summary of Mortgage Note Payable and Line of Credit (Parenthetical) (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 15, 2015
Dec. 31, 2014
Dec. 31, 2015
Farm Credit Mortgage Notes Payable [Member]        
Debt Instrument [Line Items]        
Reduced stated interest rate 12.70%   12.70%  
Farmer Mac Bonds Payable [Member]        
Debt Instrument [Line Items]        
Remaining availability     $ 0 $ 0
MetLife Mortgage Notes Payable [Member]        
Debt Instrument [Line Items]        
Remaining availability     13,800,000 8,900,000
Metlife Line of Credit [Member]        
Debt Instrument [Line Items]        
Remaining availability     $ 13,800,000 $ 8,900,000
Farm Credit Notes Payable [Member]        
Debt Instrument [Line Items]        
Reduced stated interest rate   12.70%