ALLOWANCE FOR CREDIT LOSSES ON LOANS AND FINANCE LEASES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	$ 245,447	$ 358,936	$ 269,030	$ 385,887
Increase (decrease) in ACL	(23,600)
Provision for credit losses - (benefit) expense	(16,989)	(14,443)
Net charge-offs	6,600
Increase (decrease) in net charge-offs	(5,900)
Recoveries	6,121	3,726
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	178	706
Off-Balance Sheet, Credit Loss, Liability	1,359	4,399	1,537	5,105
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	68,820	114,044	74,837	120,311
Increase (decrease) in ACL	(6,000)
Provision for credit losses - (benefit) expense	(4,871)	(4,175)
Recoveries	1,382	733
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	(22,300)
Increase (decrease) in net charge-offs	(2,000)
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	1,842	4,915	4,048	5,380
Provision for credit losses - (benefit) expense	(2,214)	(456)
Recoveries	52	36
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	30,138	99,782	52,771	109,342
Provision for credit losses - (benefit) expense	(22,640)	(8,820)
Recoveries	44	54
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	107,863	108,108	$ 103,090	$ 112,910
Increase (decrease) in ACL	4,700
Provision for credit losses - (benefit) expense	10,981	4,320
Net charge-offs	6,200
Increase (decrease) in net charge-offs	(3,000)
Recoveries	$ 3,608	$ 2,639

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of expense related to estimated loss from loan and lease transactions.

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