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ALLOWANCE FOR CREDIT LOSSES ON LOANS AND FINANCE LEASES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	$ 265,567	$ 245,447	$ 260,464	$ 269,030
Increase (decrease) in ACL	(5,100)
Provision for credit losses - (benefit) expense	16,256	(16,989)
Net charge-offs	13,300
Increase (decrease) in net charge-offs	(6,700)
Recoveries	4,648	6,121
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(105)	(178)
Off-Balance Sheet, Credit Loss, Liability	4,168	1,359	4,273	1,537
Charge-offs	17,917	12,715
Net disbursements on loans held for investment	71,193	48,370
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	64,403	68,820	62,760	74,837
Increase (decrease) in ACL	(1,600)
Provision for credit losses - (benefit) expense	73	(4,871)
Increase (decrease) in net charge-offs	700
Recoveries	497	1,382
Charge-offs	983	2,528
Residential Portfolio Segment [Member] \| U S [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	0
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in net charge-offs	(600)
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	31,235	36,784	32,906	34,284
Provision for credit losses - (benefit) expense	(1,650)	1,755
Recoveries	90	1,035
Charge-offs	118	290
Commercial Portfolio Segment [Member] \| Macroeconomic Environment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	1,100
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	3,231	1,842	2,308	4,048
Provision for credit losses - (benefit) expense	860	(2,214)
Recoveries	63	52
Charge-offs	0	44
Commercial Portfolio Segment [Member] \| U S [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	(6,100)
Charge-offs	0
Commercial Portfolio Segment [Member] \| U S [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	0
Commercial Portfolio Segment [Member] \| U S [Member] \| Leisure And Entertainment Industry [Member] \| Commercial And Industrial Sector [Member] \| Criticized [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Net disbursements on loans held for investment	24,300
Commercial Portfolio Segment [Member] \| Nonaccrual loans [Member] \| U S [Member] \| Power And Generation Industry [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			5,000
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	36,460	30,138	35,064	52,771
Provision for credit losses - (benefit) expense	1,246	(22,640)
Recoveries	168	44
Charge-offs	18	37
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| U S [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	0
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses	130,238	107,863	127,426	$ 103,090
Increase (decrease) in ACL	(2,900)
Provision for credit losses - (benefit) expense	15,727	10,981
Increase (decrease) in net charge-offs	(6,800)
Recoveries	3,830	3,608
Charge-offs	16,798	$ 9,816
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	4,675
Consumer Portfolio Segment [Member] \| U S [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	155
Consumer Portfolio Segment [Member] \| U S [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	$ 155
Accounting Standard Update 2022-02 [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			2,116
Accounting Standard Update 2022-02 [Member] \| Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			2,056
Accounting Standard Update 2022-02 [Member] \| Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			7
Accounting Standard Update 2022-02 [Member] \| Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			0
Accounting Standard Update 2022-02 [Member] \| Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			0
Accounting Standard Update 2022-02 [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses			$ 53