RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions - Zions (Details) - Zions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Related party, transaction amount	$ 11,600	$ 11,200	$ 11,200
Loans
Related Party Transaction [Line Items]
Related party, transaction amount	148,118	173,928	160,079
USDA Securities
Related Party Transaction [Line Items]
Related party, transaction amount	0	363	231
Sales of Farmer Mac Guaranteed Securities
Related Party Transaction [Line Items]
Related party, transaction amount	$ 0	$ 60,192	$ 0