LOANS - Allowance for Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 25,056	$ 23,223
Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	25,056	23,223
Agricultural Finance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	11,369	10,511	$ 7,104	$ 6,884
Agricultural Finance | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	11,369	10,511
Farm & Ranch
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,071	5,132	4,535	3,936
Farm & Ranch | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,071	5,132
Corporate AgFinance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6,298	5,379	2,569	2,948
Corporate AgFinance | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6,298	5,379
Infrastructure Finance loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	13,687	12,712	$ 7,184	$ 9,147
Infrastructure Finance loans | Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 13,687	$ 12,712