Quarterly report pursuant to Section 13 or 15(d)

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

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Borrowings - Summary of Mortgage Note Payable and Line of Credit Additional Information (Detail)
 3 Months Ended
Mar. 31, 2017
USD ($)
property
Jan. 12, 2017
USD ($)
Jun. 16, 2016
USD ($)
Dec. 05, 2014
USD ($)
New MetLife Facility        
Debt Instrument [Line Items]        
Principal Outstanding $ 125,658,000      
Commitment fee (as percent) 0.20%      
Long-term debt, additional amount available $ 21,800,000      
Minimum annualized rate (as percent) 2.50%      
Farm Credit Central Florida Notes Payable        
Debt Instrument [Line Items]        
Principal Outstanding $ 22,187,000      
Interest rate (as percent) 3.47%      
Farm Credit West Note Payable        
Debt Instrument [Line Items]        
Principal Outstanding $ 13,061,000      
Interest rate (as percent) 3.66%      
Farmer Mac Bonds Payable        
Debt Instrument [Line Items]        
Aggregate/Initial Commitment $ 125,000,000   $ 125,000,000 $ 75,000,000
Principal Outstanding $ 81,521,000      
Interest rate (as percent) 3.10%      
Undrawn Commitment $ 42,343,000      
Long-term debt, additional amount available $ 0      
Properties pledged as collateral | property 0      
Farmer Mac Bonds Payable, 2017 Issuances        
Debt Instrument [Line Items]        
Aggregate/Initial Commitment   $ 32,400,000    
Farmer Mac Bonds Payable, 2017 Issuances | Minimum        
Debt Instrument [Line Items]        
Interest rate (as percent)   2.80%    
Farmer Mac Bonds Payable, 2017 Issuances | Maximum        
Debt Instrument [Line Items]        
Interest rate (as percent)   3.63%    
MetLife Term Notes | New MetLife Facility        
Debt Instrument [Line Items]        
Aggregate/Initial Commitment $ 150,000,000      
Principal Outstanding $ 105,608,000      
Interest rate (as percent) 3.16%      
Debt term 10 years      
Undrawn Commitment $ 40,980,000      
MetLife Lines of Credit | New MetLife Facility        
Debt Instrument [Line Items]        
Aggregate/Initial Commitment 50,000,000      
Principal Outstanding 20,050,000      
Undrawn Commitment $ 29,950,000      
Effective interest rate (as percent) 3.26%      
MetLife Lines of Credit | New MetLife Facility | LIBOR        
Debt Instrument [Line Items]        
Percentage added to LIBOR (as percent) 2.25%