ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Activity in ACL on Loans and Finance Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 261,843	$ 260,464	$ 269,030
Provision for credit losses - (benefit) expense	62,861	66,644	25,679
Charge-offs	(113,828)	(88,102)	(57,330)
Recoveries	33,066	20,721	23,085
Ending balance	243,942	261,843	260,464
Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		2,116
Ending balance			2,116
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	57,397	62,760	74,837
Provision for credit losses - (benefit) expense	(16,225)	(6,866)	(8,734)
Charge-offs	(1,971)	(3,245)	(6,890)
Recoveries	1,453	2,692	3,547
Ending balance	40,654	57,397	62,760
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		2,056
Ending balance			2,056
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	5,605	2,308	4,048
Provision for credit losses - (benefit) expense	(1,912)	1,408	(2,342)
Charge-offs	0	(62)	(123)
Recoveries	131	1,951	725
Ending balance	3,824	5,605	2,308
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		0
Ending balance			0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	32,631	35,064	52,771
Provision for credit losses - (benefit) expense	(10,717)	(2,086)	(18,994)
Charge-offs	0	(1,133)	(85)
Recoveries	533	786	1,372
Ending balance	22,447	32,631	35,064
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		0
Ending balance			0
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	33,190	32,906	34,284
Provision for credit losses - (benefit) expense	(4,886)	6,372	(1,770)
Charge-offs	(2,742)	(6,936)	(2,067)
Recoveries	6,704	841	2,459
Ending balance	32,266	33,190	32,906
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		7
Ending balance			7
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	133,020	127,426	103,090
Provision for credit losses - (benefit) expense	96,601	67,816	57,519
Charge-offs	(109,115)	(76,726)	(48,165)
Recoveries	24,245	14,451	14,982
Ending balance	144,751	133,020	127,426
Consumer Portfolio Segment [Member] | Bulk Sale Of Fully Charged-Off Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries	$ 10,000
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance		$ 53
Ending balance			$ 53