Annual report pursuant to Section 13 and 15(d)

Borrowings - Farmer Mac Facility (Detail)

v3.20.4
Borrowings - Farmer Mac Facility (Detail)
12 Months Ended
Dec. 31, 2020
USD ($)
debt_instrument
Dec. 11, 2020
USD ($)
Dec. 10, 2020
USD ($)
Jan. 10, 2020
USD ($)
Dec. 05, 2014
USD ($)
Debt Instrument [Line Items]          
Debt instrument, loans to value ratios percentage 60.00%        
Farmer Mac Facility          
Debt Instrument [Line Items]          
Debt instrument, face amount     $ 225,000,000.0 $ 8,100,000 $ 125,000,000.0
Number of debt instruments issued | debt_instrument 3        
Bonds repaid $ 22,000,000.0        
Interest rate (as percent)       2.66%  
Debt instrument, loans to value ratios percentage 60.00%        
Farmer Mac Facility | Lease One          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 3,180,000      
Interest rate (as percent)   2.13%      
Farmer Mac Facility | Lease Two          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 10,673,000      
Interest rate (as percent)   3.25%