ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Changes in Accumulated Other Comprehensive Income or Loss by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	$ 195,241	$ 166,388
Other comprehensive income before reclassification	(4,070)	5,775
Amounts reclassified from accumulated other comprehensive income	5	9
Total other comprehensive income (loss)	(4,065)	5,784
Ending balance	197,128	177,341
Total
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(66,013)	(75,257)
Total other comprehensive income (loss)	(4,065)	5,784
Ending balance	(70,078)	(69,473)
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	(62,800)	(71,296)
Other comprehensive income before reclassification	(4,070)	5,775
Amounts reclassified from accumulated other comprehensive income	0	0
Total other comprehensive income (loss)	(4,070)	5,775
Ending balance	(66,870)	(65,521)
Defined Benefit and Other Benefit Plans
Changes in accumulated other comprehensive income or loss by component, net of tax [Roll Forward]
Beginning balance	(3,213)	(3,961)
Other comprehensive income before reclassification	0	0
Amounts reclassified from accumulated other comprehensive income	5	9
Total other comprehensive income (loss)	5	9
Ending balance	$ (3,208)	$ (3,952)