Annual report pursuant to Section 13 and 15(d)

Borrowings - Farmer Mac Facility (Detail)

v3.19.3.a.u2
Borrowings - Farmer Mac Facility (Detail)
12 Months Ended
Dec. 31, 2019
USD ($)
debt_instrument
Dec. 11, 2019
USD ($)
Dec. 05, 2014
USD ($)
Debt Instrument [Line Items]      
Debt instrument, loans to value ratios percentage 60.00%    
Farmer Mac Bonds Payable      
Debt Instrument [Line Items]      
Debt instrument, face amount     $ 125,000,000
Debt instrument, loans to value ratios percentage 60.00%    
Farmer Mac Bonds Payable Issued in Current Period      
Debt Instrument [Line Items]      
Number of debt instruments issued | debt_instrument 2    
Bonds repaid $ 13,900,000    
Farmer Mac Bonds Payable Issued in Current Period | Lease One      
Debt Instrument [Line Items]      
Debt instrument, face amount   $ 3,285,000  
Interest rate (as percent)   2.61%  
Farmer Mac Bonds Payable Issued in Current Period | Lease Two      
Debt Instrument [Line Items]      
Debt instrument, face amount   $ 10,568,000  
Interest rate (as percent)   2.61%