ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains (losses) on sales of available for sale securities	$ (1,392)	$ 90	$ (2,963)	$ 656
Interest expense - subordinated debentures and term loans	2,412	2,016	4,797	3,675
Income tax expense	(10,699)	(3,879)	(22,016)	(11,145)
Total reclassifications for the period, net of tax	60,862	38,991	124,941	87,577	$ 87,577
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	(1,113)	(70)	(2,353)	188
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 (losses) on sales of available for sale securities	(1,392)	90	(2,963)	656
Income tax expense	292	(19)	622	(138)
Total reclassifications for the period, net of tax	(1,100)	71	(2,341)	518
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	3	37	3	88
Total reclassifications for the period, net of tax	(13)	(141)	(12)	(330)
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	$ (16)	$ (178)	$ (15)	$ (418)