ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	$ 91,034	$ 79,220
Net securities gains (losses)	(46)	16
Income tax expense	4,402	3,771
Other expense	2,248	2,562
Net income	23,401	24,278
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(439)	(386)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Debt Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	114
Net income	(428)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Held-to-Maturity Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	(496)	(491)
Income tax expense		100
Net income		(375)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (losses)	(46)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	4	4
Other expense	(15)	(15)
Net income	$ (11)	$ (11)