Amount of increase (decrease) in allowance for loan and lease losses write-offs, net.

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Amount, after recoveries, of loans and leases that have been written-off.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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ALLOWANCE FOR CREDIT LOSSES ON LOANS AND FINANCE LEASES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	$ 252,152	$ 324,958	$ 252,152	$ 324,958	$ 245,447	$ 269,030	$ 358,936	$ 385,887
Increase (decrease) in ACL			(16,900)
Provision for credit losses - (benefit) expense	12,665	(26,302)	(4,324)	(40,745)
Net charge-offs	6,000		12,600
Increase (decrease) in net charge-offs	(1,700)		7,600
Recoveries	6,632	10,190	12,753	13,916
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	812	(1,669)	634	(2,375)
Off-Balance Sheet, Credit Loss, Liability	2,171	2,730	2,171	2,730	1,359	1,537	4,399	5,105
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	65,231	112,882	65,231	112,882	68,820	74,837	114,044	120,311
Increase (decrease) in ACL			9,600
Provision for credit losses - (benefit) expense	(2,797)	825	(7,668)	(3,350)
Increase (decrease) in net charge-offs	(1,200)		(2,100)
Recoveries	1,287	940	2,669	1,673
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL			(20,300)
Increase (decrease) in net charge-offs	4,100		2,000
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	2,020	4,757	2,020	4,757	1,842	4,048	4,915	5,380
Provision for credit losses - (benefit) expense	151	(196)	(2,063)	(652)
Recoveries	43	38	95	74
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	32,619	72,452	32,619	72,452	30,138	52,771	99,782	109,342
Provision for credit losses - (benefit) expense	1,265	(27,299)	(21,375)	(36,119)
Recoveries	1,218	50	1,262	104
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	116,079	97,397	116,079	97,397	$ 107,863	$ 103,090	$ 108,108	$ 112,910
Increase (decrease) in ACL			13,000
Provision for credit losses - (benefit) expense	15,148	794	26,129	5,114
Net charge-offs	13,100
Increase (decrease) in net charge-offs	(4,600)		(7,500)
Recoveries	$ 3,495	$ 3,293	$ 7,103	$ 5,932