ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Activity in ACL on loans and finance leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 267,058	$ 252,152	$ 260,464	$ 269,030
Provision for credit losses - (benefit) expense	10,643	14,352	47,669	10,028
Charge-offs	(20,259)	(14,062)	(62,260)	(39,369)
Recoveries	6,173	5,417	15,626	18,170
Ending balance	263,615	257,859	263,615	257,859
Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			2,116
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	60,514	65,231	62,760	74,837
Provision for credit losses - (benefit) expense	(3,349)	755	(6,776)	(6,913)
Charge-offs	(499)	(1,466)	(2,628)	(6,073)
Recoveries	534	559	1,788	3,228
Ending balance	57,200	65,079	57,200	65,079
Residential Portfolio Segment [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			2,056
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	28,014	36,203	32,906	34,284
Provision for credit losses - (benefit) expense	1,931	(1,228)	3,278	(575)
Charge-offs	(9)	(8)	(6,477)	(366)
Recoveries	161	494	383	2,118
Ending balance	30,097	35,461	30,097	35,461
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			7
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	42,427	32,619	35,064	52,771
Provision for credit losses - (benefit) expense	(1,344)	(2,383)	5,901	(23,758)
Charge-offs	(1)	(3)	(107)	(42)
Recoveries	75	57	299	1,319
Ending balance	41,157	30,290	41,157	30,290
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			0
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	4,804	2,020	2,308	4,048
Provision for credit losses - (benefit) expense	(642)	(179)	1,420	(2,242)
Charge-offs	(4)	(63)	(42)	(123)
Recoveries	1,463	43	1,935	138
Ending balance	5,621	1,821	5,621	1,821
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			0
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	131,299	116,079	127,426	103,090
Provision for credit losses - (benefit) expense	14,047	17,387	43,846	43,516
Charge-offs	(19,746)	(12,522)	(53,006)	(32,765)
Recoveries	3,940	4,264	11,221	11,367
Ending balance	$ 129,540	$ 125,208	129,540	$ 125,208
Consumer Portfolio Segment [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance			$ 53