ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in Accumulated Other Comprehensive Income or Loss by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	$ 254,709	$ 215,309
Other comprehensive income before reclassification	323	8,140
Amounts reclassified from accumulated other comprehensive income	6	6
Total other comprehensive income	329	8,146
Ending balance	262,929	228,306
Total
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(36,053)	(65,065)
Total other comprehensive income	329	8,146
Ending balance	(35,724)	(56,919)
Unrealized Gains and Losses on Securities Available for Sale
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(34,803)	(63,339)
Other comprehensive income before reclassification	323	8,140
Amounts reclassified from accumulated other comprehensive income	0	0
Total other comprehensive income	323	8,140
Ending balance	(34,480)	(55,199)
Defined Benefit and Other Benefit Plans
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(1,250)	(1,726)
Other comprehensive income before reclassification	0	0
Amounts reclassified from accumulated other comprehensive income	6	6
Total other comprehensive income	6	6
Ending balance	$ (1,244)	$ (1,720)