LOANS - Allowance for Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 16,031	$ 15,089
Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	16,031	15,089
Agricultural Finance | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6,884	6,775	$ 3,442	$ 3,745
Farm & Ranch | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,936	4,044	2,882	3,404
Corporate AgFinance | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,948	2,731	560	341
Rural Infrastructure Finance | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 9,147	$ 8,314	$ 10,599	$ 10,087