ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	$ 56,837	$ 52,492	$ 48,678	$ 44,880	$ 45,007	$ 45,741	$ 43,661	$ 43,679	$ 202,887	$ 178,088	$ 163,008
Net securities gains									21	797	433
Income tax expense	4,987	6,237	5,584	4,539	5,507	5,469	5,705	5,030	21,347	21,711	19,539
Other expense									13,124	8,905	8,197
NET INCOME	$ 25,977	$ 28,525	$ 25,673	$ 23,642	$ 24,283	$ 24,119	$ 24,348	$ 22,983	103,817	95,733	84,337
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME									(1,290)	448	154
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains and (Losses) on Available-for-Sales Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income									(1,518)
Net securities gains									21	797	433
Income tax expense									315	(167)	(91)
NET INCOME									(1,182)	630	342
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense									36	60	63
Other expense									(144)	(242)	(251)
NET INCOME									$ (108)	$ (182)	$ (188)