ACCUMULATED OTHER COMPREHENSIVE INCOME - Changes in accumulated other comprehensive income by component, net of tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 393,718	$ 429,471
Other comprehensive income (loss) before reclassification	2,599	(10,502)
Amounts reclassified from accumulated other comprehensive income	(1,006)	370
Total other comprehensive income (loss)	1,593	(10,132)
Balance at end of period	385,693	420,214
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(24,719)	(372)
Balance at end of period	(23,126)	(10,504)
Unrealized Gains and (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	11,091	(246)
Other comprehensive income (loss) before reclassification	(1,440)	5,237
Amounts reclassified from accumulated other comprehensive income	(1,004)	322
Total other comprehensive income (loss)	(2,444)	5,559
Balance at end of period	8,647	5,313
Unrealized Gains and (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(36,183)	1,091
Other comprehensive income (loss) before reclassification	4,039	(15,739)
Amounts reclassified from accumulated other comprehensive income	0	0
Total other comprehensive income (loss)	4,039	(15,739)
Balance at end of period	(32,144)	(14,648)
Post-Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	373	(1,217)
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive income	(2)	48
Total other comprehensive income (loss)	(2)	48
Balance at end of period	$ 371	$ (1,169)