Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Details)

v3.23.1
Borrowings - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2023
Sep. 30, 2022
Mar. 31, 2022
Jun. 30, 2022
Dec. 31, 2022
Feb. 03, 2022
Feb. 02, 2022
Debt Instrument [Line Items]              
Net cost basis $ 1,361,141,000            
Other income 2,620,000   $ 2,767,000        
Borrowings under lines of credit 100,000       $ 100,000    
Expected interest expense reclassification 2,200,000            
Notes and Bonds Payables              
Debt Instrument [Line Items]              
Repayments of maturing loans 21,800,000            
Borrowings              
Debt Instrument [Line Items]              
Net cost basis $ 1,200,000,000            
Weighted average interest rate 3.77%   3.72%        
Farm Credit Notes Payable              
Debt Instrument [Line Items]              
Reduction in interest rate       (24.10%)      
Reduction in basis points       (1.09%)      
Other income $ 2,300,000 $ 113,000          
Farm Credit Notes Payable | Notes and Bonds Payables | Weighted average              
Debt Instrument [Line Items]              
Interest rate, stated percentage 3.46%            
Interest rate, effective percentage 3.40%            
MetLife Term Loan 2020 | Notes and Bonds Payables              
Debt Instrument [Line Items]              
Face amount of debt $ 75,000,000           $ 75,000,000
Interest rate, stated percentage 2.75%            
MetLife Facility | Notes and Bonds Payables              
Debt Instrument [Line Items]              
Face amount of debt           $ 100,000,000  
MetLife Facility | Line of Credit              
Debt Instrument [Line Items]              
Face amount of debt $ 75,000,000         $ 75,000,000  
Farmer Mac Facility              
Debt Instrument [Line Items]              
Face amount of debt 225,000,000            
Secured debt 57,000,000            
Mortgage Notes and Bonds Payable | Notes and Bonds Payables              
Debt Instrument [Line Items]              
Secured debt 602,300,000            
Fair value amount 553,600,000            
Short Term Mortgage Notes And Bonds Payable | Notes and Bonds Payables              
Debt Instrument [Line Items]              
Borrowings under lines of credit $ 100,000