ALLOWANCE FOR CREDIT LOSSES ON LOANS AND FINANCE LOSSES - Activity in ACL on loans and finance leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 260,464	$ 269,030
Provision for credit losses - (benefit) expense	16,256	(16,989)
Charge-offs	(17,917)	(12,715)
Recoveries	4,648	6,121
Ending balance	265,567	245,447
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	62,760	74,837
Provision for credit losses - (benefit) expense	73	(4,871)
Charge-offs	(983)	(2,528)
Recoveries	497	1,382
Ending balance	64,403	68,820
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	32,906	34,284
Provision for credit losses - (benefit) expense	(1,650)	1,755
Charge-offs	(118)	(290)
Recoveries	90	1,035
Ending balance	31,235	36,784
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	35,064	52,771
Provision for credit losses - (benefit) expense	1,246	(22,640)
Charge-offs	(18)	(37)
Recoveries	168	44
Ending balance	36,460	30,138
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	2,308	4,048
Provision for credit losses - (benefit) expense	860	(2,214)
Charge-offs	0	(44)
Recoveries	63	52
Ending balance	3,231	1,842
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	127,426	103,090
Provision for credit losses - (benefit) expense	15,727	10,981
Charge-offs	(16,798)	(9,816)
Recoveries	3,830	3,608
Ending balance	130,238	$ 107,863
Consumer Portfolio Segment [Member] | Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 53