LOANS - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at lower of cost or fair value	$ 0	$ 0
Number of operating segments | segment	7
(Release of)/provision for losses	$ 858,000	1,323,000	$ (860,000)
Rural Infrastructure Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
(Release of)/provision for losses	$ 800,000	(2,300,000)	500,000
Agricultural Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of operating segments | segment	2
(Release of)/provision for losses	$ 100,000	$ 3,400,000	$ (1,400,000)