SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income	$ 35,321	$ 42,261	$ 42,956
Non-interest expense	91,253	90,508	94,860
Tax expense	(11,288)	(9,329)	(8,407)
Reclassification out of AOCI | Available-for-sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income	53	2,870	5,445
Tax expense	(12)	(672)	(1,275)
Net of tax	$ 41	$ 2,198	4,170
Reclassification out of AOCI | Hedging derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income			(4,852)
Tax expense			917
Net of tax			$ (3,935)