LOANS - Changes in the Allowance for Losses (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			$ 23,223,000
Provision for/(release of) losses	$ 7,477,000	$ 3,428,000	16,874,000	$ 7,806,000
Ending balance	35,340,000		35,340,000
Total Agricultural Finance loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	13,578,000	8,690,000	10,511,000	6,884,000
Provision for/(release of) losses	6,878,000	1,911,000	12,662,000	7,760,000
Charge-offs	(4,423,000)	0	(7,263,000)	(4,043,000)
Recovery	2,229,000	0	2,352,000	0
Ending balance	18,262,000	10,601,000	18,262,000	10,601,000
Farm & Ranch
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	6,635,000	4,676,000	5,132,000	3,936,000
Provision for/(release of) losses	4,067,000	156,000	8,410,000	997,000
Charge-offs	(1,243,000)	0	(4,083,000)	(101,000)
Recovery	1,675,000	0	1,675,000	0
Ending balance	11,134,000	4,832,000	11,134,000	4,832,000
Farm & Ranch | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for/(release of) losses			2,300,000	1,200,000
Corporate AgFinance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	6,943,000	4,014,000	5,379,000	2,948,000
Provision for/(release of) losses	2,811,000	1,755,000	4,252,000	6,763,000
Charge-offs	(3,180,000)	0	(3,180,000)	(3,942,000)
Recovery	554,000	0	677,000	0
Ending balance	7,128,000	5,769,000	7,128,000	5,769,000
Corporate AgFinance | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for/(release of) losses			1,000,000	1,100,000
Infrastructure Finance loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	16,378,000	7,810,000	12,712,000	9,147,000
Provision for/(release of) losses	700,000	1,540,000	4,366,000	203,000
Charge-offs	0	0	0	0
Recovery	0	0	0	0
Ending balance	$ 17,078,000	$ 9,350,000	17,078,000	9,350,000
Infrastructure Finance loans | Collateral Pledged
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for/(release of) losses			$ 0	$ 0