LOANS - Changes in the Allowance for Losses (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 23,223,000
(Release of)/provision for losses	1,684,000	$ (1,801,000)
Ending balance	25,056,000
Total Agricultural Finance loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	10,511,000	6,884,000
(Release of)/provision for losses	775,000	220,000
Recovery	83,000	0
Ending balance	11,369,000	7,104,000
Farm & Ranch
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	5,132,000	3,936,000
(Release of)/provision for losses	(61,000)	599,000
Recovery	0	0
Ending balance	5,071,000	4,535,000
Farm & Ranch | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
(Release of)/provision for losses	700,000	1,400,000
Corporate AgFinance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	5,379,000	2,948,000
(Release of)/provision for losses	836,000	(379,000)
Recovery	83,000	0
Ending balance	6,298,000	2,569,000
Corporate AgFinance | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
(Release of)/provision for losses	1,000,000	0
Infrastructure Finance loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	12,712,000	9,147,000
(Release of)/provision for losses	975,000	(1,963,000)
Recovery	0	0
Ending balance	13,687,000	7,184,000
Infrastructure Finance loans | Collateral Pledged
Financing Receivable, Allowance for Credit Losses [Roll Forward]
(Release of)/provision for losses	$ 0	$ 0