LOANS - Schedule of Allowance for Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	$ 47,167	$ 39,920	$ 37,785	$ 29,956	$ 25,056	$ 23,223
Farm & Ranch
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	15,472	12,324	9,400	6,635	5,071	5,132
Corporate AgFinance
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	7,211	6,421	6,631	6,943	6,298	5,379
Infrastructure Finance loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	24,484	$ 21,175	21,754	$ 16,378	$ 13,687	$ 12,712
Real Estate Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	47,167		37,785
Real Estate Loan | Farm & Ranch
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	15,472		9,400
Real Estate Loan | Corporate AgFinance
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	7,211		6,631
Real Estate Loan | Infrastructure Finance loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Losses	$ 24,484		$ 21,754