Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Detail)

v3.7.0.1
Borrowings - Additional Information (Detail)
 1 Months Ended 3 Months Ended
May 09, 2017
USD ($)
Mar. 31, 2017
USD ($)
debt_instrument
Mar. 31, 2016
USD ($)
Jan. 12, 2017
USD ($)
Dec. 31, 2016
USD ($)
Oct. 05, 2016
USD ($)
Oct. 04, 2016
USD ($)
Jun. 16, 2016
USD ($)
Dec. 05, 2014
USD ($)
May 09, 2014
USD ($)
Debt Instrument [Line Items]                    
Weighted average interest rate (as percent)   3.25% 3.29%              
Other income   $ 184,000 $ 95,000              
Borrowings under line of credit   $ 20,050,000     $ 16,550,000          
Farm Credit Notes Payable                    
Debt Instrument [Line Items]                    
Reduced stated interest rate (as percent)   17.20%                
Reduction in basis points (as percent)   0.61%                
Farm Credit Central Florida Notes Payable                    
Debt Instrument [Line Items]                    
Reduced stated interest rate (as percent)   15.80%                
Number of debt instruments | debt_instrument   8                
Other income     94,000              
Farm Credit Central Florida Notes Payable | Subsequent Event                    
Debt Instrument [Line Items]                    
Reduction in basis points (as percent) 0.55%                  
Other income $ 124,000                  
Farm Credit West Note Payable                    
Debt Instrument [Line Items]                    
Reduced stated interest rate (as percent)   21.30%                
Reduction in basis points (as percent)   0.76%                
Number of debt instruments | debt_instrument   2                
Other income   $ 59,000 $ 0              
MetLife Facility                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           $ 200,000,000 $ 125,000,000      
2015 Metlife Term Note (MetLife)                    
Debt Instrument [Line Items]                    
Face amount of debt                   $ 100,000,000
2015 Metlife Line of Credit (MetLife)                    
Debt Instrument [Line Items]                    
Face amount of debt                   $ 25,000,000
2016 Metlife Term Note (MetLife)                    
Debt Instrument [Line Items]                    
Line of credit, carrying value           50,000,000        
2016 Metlife Line of Credit (MetLife)                    
Debt Instrument [Line Items]                    
Line of credit, carrying value           $ 25,000,000        
Farmer Mac Bonds Payable                    
Debt Instrument [Line Items]                    
Face amount of debt   $ 125,000,000           $ 125,000,000 $ 75,000,000  
Number of debt instruments | debt_instrument   13                
Extension period of debt   2 years                
Farmer Mac Bonds Payable, 2017 Issuances                    
Debt Instrument [Line Items]                    
Face amount of debt       $ 32,400,000            
Number of debt instruments | debt_instrument   4                
Mortgage notes and bonds payable | Notes and bonds payables                    
Debt Instrument [Line Items]                    
Aggregate fair value of mortgage notes payable outstanding   $ 216,700,000                
Mortgage notes payable, carrying value   222,400,000                
Short-term variable-rate mortgage notes and bonds payable | Notes and bonds payables                    
Debt Instrument [Line Items]                    
Borrowings under line of credit   $ 20,100,000