LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Allowance for loan losses:
Balance, beginning of period	$ 132,182	$ 110,768
Loans charged off	(5,894)	(5,726)
Recoveries credited to allowance	977	1,167
Provision charged to operations	8,925	10,303
Balance, end of period	136,190	116,512
Commercial Portfolio
Allowance for loan losses:
Balance, beginning of period	105,896	82,753
Loans charged off	(4,939)	(5,007)
Recoveries credited to allowance	533	515
Provision charged to operations	9,038	9,825
Balance, end of period	110,528	88,086
Consumer Portfolio
Allowance for loan losses:
Balance, beginning of period	26,286	28,015
Loans charged off	(955)	(719)
Recoveries credited to allowance	444	652
Provision charged to operations	(113)	478
Balance, end of period	$ 25,662	$ 28,426