Annual report pursuant to Section 13 and 15(d)

Borrowings - Bond Gross Proceeds and Terms (Details)

v3.8.0.1
Borrowings - Bond Gross Proceeds and Terms (Details)
Dec. 31, 2017
USD ($)
property
Jan. 12, 2017
USD ($)
Jun. 16, 2016
USD ($)
Dec. 05, 2014
USD ($)
Farmer Mac Bonds Payable        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 125,000,000   $ 125,000,000 $ 75,000,000
Principal Outstanding $ 84,519,000      
Stated Interest Rate 3.13%      
Undrawn Commitment $ 39,118,000      
Additional amount available to be drawn $ 0      
Line of credit facility, additional properties pledged as collateral | property 0      
Farmer Mac Bonds Payable Issued in Current Period        
Debt Instrument [Line Items]        
Debt instrument, face amount   $ 35,625,000    
Minimum | Farmer Mac Bonds Payable        
Debt Instrument [Line Items]        
Interest rate terms   2.80%    
Maximum | Farmer Mac Bonds Payable        
Debt Instrument [Line Items]        
Interest rate terms   4.05%