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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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The net cash outflow or inflow for other changes, net, in the loan and lease balances held for investment purposes that are not separately disclosed. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.

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ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	$ 1,800
Provision for credit losses - (benefit) expense	12,917	$ 16,256
Net charge-offs	11,200	13,300
Increase (decrease) in net charge-offs	(2,100)
Recoveries	18,171	4,648
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	281	(105)
Off-Balance Sheet, Credit Loss, Liability	4,919	4,168	$ 4,638	$ 4,273
Charge-offs	29,339	17,917
Net disbursements on loans held for investment	156,118	71,193
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	(700)
Provision for credit losses - (benefit) expense	(464)	73
Recoveries	272	497
Charge-offs	516	983
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 ACL			1,900
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision for credit losses - (benefit) expense	(3,360)	(1,650)
Recoveries	5,119	90
Charge-offs	459	118
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision for credit losses - (benefit) expense	571	860
Recoveries	10	63
Charge-offs	0	0
Commercial Portfolio Segment [Member] \| U S [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	307
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] \| Puerto Rico [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries	5,000
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision for credit losses - (benefit) expense	(10)	1,246
Recoveries	40	168
Charge-offs	0	18
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]
Increase (decrease) in ACL			$ 600
Provision for credit losses - (benefit) expense	16,180	15,727
Recoveries	12,730	3,830
Charge-offs	28,364	$ 16,798
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	9,415
Consumer Portfolio Segment [Member] \| Bulk Sale Of Nonaccrual Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries	9,500
Consumer Portfolio Segment [Member] \| U S [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	59
Consumer Portfolio Segment [Member] \| U S [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	$ 59