ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in Accumulated Other Comprehensive Income or Loss by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	$ 262,929	$ 228,306	$ 254,709	$ 215,309
Other comprehensive income before reclassification	(227)	971	96	9,111
Amounts reclassified from accumulated other comprehensive income	6	13,243	12	13,249
Total other comprehensive income (loss)	(221)	14,214	108	22,360
Ending balance	270,361	234,966	270,361	234,966
Total
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(35,724)	(56,919)	(36,053)	(65,065)
Total other comprehensive income (loss)	(221)	14,214	108	22,360
Ending balance	(35,945)	(42,705)	(35,945)	(42,705)
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	(34,480)	(55,199)	(34,803)	(63,339)
Other comprehensive income before reclassification	(227)	971	96	9,111
Amounts reclassified from accumulated other comprehensive income	0	13,237	0	13,237
Total other comprehensive income (loss)	(227)	14,208	96	22,348
Ending balance	(34,707)	(40,991)	(34,707)	(40,991)
Defined Benefit and Other Benefit Plans
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(1,244)	(1,720)	(1,250)	(1,726)
Other comprehensive income before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	6	6	12	12
Total other comprehensive income (loss)	6	6	12	12
Ending balance	$ (1,238)	$ (1,714)	$ (1,238)	$ (1,714)