FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Level 3 Assets and Liabilities) (Details) - Mortgage revenue bonds - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	$ 6,716	$ 6,847
Principal payments received	(146)	(141)
Unrealized net (loss) gain included in other comprehensive income	(71)	66
Aggregate fair value / Balance at the end of the period	6,499	6,772
States and political subdivisions
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	6,048	6,165
Principal payments received	(134)	(129)
Unrealized net (loss) gain included in other comprehensive income	(76)	65
Aggregate fair value / Balance at the end of the period	5,838	6,101
Residential - Non-government agencies
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	668	682
Principal payments received	(12)	(12)
Unrealized net (loss) gain included in other comprehensive income	5	1
Aggregate fair value / Balance at the end of the period	$ 661	$ 671