ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains on sales of available for sale securities	$ 481	$ 1,756	$ 1,137	$ 5,316
Interest expense - subordinated debentures and term loans	2,105	1,660	5,780	4,976
Income tax expense	(9,793)	(9,062)	(20,938)	(28,308)
Total reclassifications for the period, net of tax	63,752	52,770	151,329	157,798
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period, net of tax	318	1,177	506	3,585
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | Unrealized gains (losses) on available for sale securities
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains on sales of available for sale securities	481	1,756	1,137	5,316
Income tax expense	(101)	(369)	(239)	(1,116)
Total reclassifications for the period, net of tax	380	1,387	898	4,200
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | Unrealized gains (losses) on cash flow hedges
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	16	56	104	164
Total reclassifications for the period, net of tax	(62)	(210)	(392)	(615)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | Unrealized gains (losses) on cash flow hedges | Interest rate contracts
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Interest expense - subordinated debentures and term loans	$ (78)	$ (266)	$ (496)	$ (779)