SHAREHOLDERS’ EQUITY - Pre-tax and After-tax Changes in the Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax [Abstract]
Change in unrealized gain (loss) on available-for-sale debt securities, before tax	$ 32,056	$ (106,087)
Change in unrealized gain (loss) on available-for-sale debt securities, tax	8,078	(26,734)
Change in unrealized gain (loss) on available-for-sale debt securities, after tax	23,978	(79,353)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]
Reclassification of gain on sale of available-for-sale securities, before tax	(381)	0
Reclassification of gain on sale of available-for-sale securities, tax	(96)	0
Reclassification of gain on sale of available-for-sale securities, after tax	(285)	0
Other Comprehensive Loss, Held-to-maturity Security, OTTI, after Tax and Adjustments [Abstract]
Reclassification of gain on held-to-maturity securities, before tax	(852)	(941)
Reclassification of gain on held-to-maturity securities, tax	(214)	(237)
Reclassification of gain on held-to-maturity securities, after tax	(638)	(704)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent [Abstract]
Change in unrealized gain (loss) on cash flow hedges arising during the period, before tax	1,705	2,341
Change in unrealized gain (loss) on cash flow hedges arising during the period, tax	430	590
Change in unrealized gain (loss) on cash flow hedges arising during the period, after tax	1,275	1,751
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Reclassification of loss on cash flow hedges, before tax	36	359
Reclassification of loss on cash flow hedges, tax	9	90
Reclassification of loss on cash flow hedges, after tax	(27)	(269)
OCI, Net of Tax [Abstract]
Total other comprehensive income (loss), before tax	32,564	(104,328)
Total other comprehensive income (loss), tax	8,207	(26,291)
Total other comprehensive income (loss), after-tax	$ 24,357	$ (78,037)