Quarterly report [Sections 13 or 15(d)]

BORROWINGS - Narrative (Details)

v3.26.1
BORROWINGS - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2025
Debt Instrument [Line Items]        
Net cost basis $ 1,143,781,000      
Expected reclassification as reduction to interest expense 1,300,000      
Borrowings        
Debt Instrument [Line Items]        
Net cost basis $ 954,500,000      
Weighted average interest rate 3.81% 3.79%    
Farm Credit Notes Payable        
Debt Instrument [Line Items]        
Reduction in interest rate       21.00%
Reduction in basis points   0.95% 1.01% 0.95%
Debt eligible for interest patronage $ 143,600,000     $ 144,900,000
MetLife Lines of Credit | Line of Credit        
Debt Instrument [Line Items]        
Face amount of debt 75,000,000.0      
2020 MetLife Term Note | Notes and Bonds Payables        
Debt Instrument [Line Items]        
Face amount of debt 75,000,000      
2022 MetLife Term Note | Notes and Bonds Payables        
Debt Instrument [Line Items]        
Face amount of debt 100,000,000.0      
Farmer Mac Facility        
Debt Instrument [Line Items]        
Face amount of debt $ 225,000,000.0      
Debt instrument, term 10 years      
Secured debt $ 22,200,000      
Mortgage Notes and Bonds Payable | Fair Value        
Debt Instrument [Line Items]        
Debt, fair value 453,500,000      
Mortgage Notes and Bonds Payable | Carrying Value        
Debt Instrument [Line Items]        
Debt, fair value 469,300,000      
Variable-Rate Line of Credit | Fair Value        
Debt Instrument [Line Items]        
Debt, fair value 16,700,000      
Variable-Rate Line of Credit | Carrying Value        
Debt Instrument [Line Items]        
Debt, fair value $ 16,700,000