ALLOWANCE FOR CREDIT LOSSES - Changes in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	$ 156,791	$ 141,433
Provision for Credit Losses-loans and leases	9,141	13,419
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	11,513	11,137
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	1,063	559
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	10,450	10,578
Balance at end of year	155,482	144,274
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	49,987	44,319
Provision for Credit Losses-loans and leases	8,470	4,233
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	8,178	2,695
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	195	162
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	7,983	2,533
Balance at end of year	50,474	46,019
Lease financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	13,079	12,365
Provision for Credit Losses-loans and leases	1,183	(518)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	1,454	3
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	29	59
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	1,425	(56)
Balance at end of year	12,837	11,903
Construction real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	19,216	11,003
Provision for Credit Losses-loans and leases	348	2,334
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	0	0
Balance at end of year	19,564	13,337
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	35,721	34,903
Provision for Credit Losses-loans and leases	(1,108)	4,789
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	5,319
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	24	38
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	(24)	5,281
Balance at end of year	34,637	34,411
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	17,822	18,088
Provision for Credit Losses-loans and leases	(660)	(330)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	65
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	24	24
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	(24)	41
Balance at end of year	17,186	17,717
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	14,774	13,322
Provision for Credit Losses-loans and leases	300	(380)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	86	25
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	144	80
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	(58)	(55)
Balance at end of year	15,132	12,997
Installment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	3,564	4,888
Provision for Credit Losses-loans and leases	313	2,623
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	1,321	2,236
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	563	145
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	758	2,091
Balance at end of year	3,119	5,420
Credit card
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of year	2,628	2,545
Provision for Credit Losses-loans and leases	295	668
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	474	794
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	84	51
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	(390)	(743)
Balance at end of year	$ 2,533	$ 2,470