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

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

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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, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

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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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ALLOWANCE FOR CREDIT LOSSES FOR LOANS AND FINANCE LEASES - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	$ (17,900)
Provision for credit losses - (benefit) expense	62,861	$ 66,644	$ 25,679
Net charge-offs	80,800	67,400
Increase (decrease) in net charge-offs	13,400
Recoveries	33,066	20,721	23,085
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(1,495)	365	2,736
Off-Balance Sheet, Credit Loss, Liability	3,143	4,638	4,273	$ 1,537
Charge-offs	113,828	88,102	57,330
Net disbursements on loans held for investment	705,368	758,232	603,853
Allowance for credit losses	243,942	261,843	260,464	269,030
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	(16,700)
Provision for credit losses - (benefit) expense	(16,225)	(6,866)	(8,734)
Recoveries	1,453	2,692	3,547
Charge-offs	1,971	3,245	6,890
Allowance for credit losses	40,654	57,397	62,760	74,837
Residential Portfolio Segment [Member] \| US [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	0	6
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	(12,900)
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision for credit losses - (benefit) expense	(1,912)	1,408	(2,342)
Recoveries	131	1,951	725
Charge-offs	0	62	123
Allowance for credit losses	3,824	5,605	2,308	4,048
Commercial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision for credit losses - (benefit) expense	(4,886)	6,372	(1,770)
Increase (decrease) in net charge-offs	6,000
Recoveries	6,704	841	2,459
Charge-offs	2,742	6,936	2,067
Allowance for credit losses	32,266	33,190	32,906	34,284
Commercial Portfolio Segment [Member] \| US [Member] \| Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	0	0
Commercial Portfolio Segment [Member] \| US [Member] \| Commercial and Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	307	6,578
Commercial Portfolio Segment [Member] \| Puerto Rico [Member] \| Commercial and Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries	5,000
Charge-offs	1,200
Commercial Portfolio Segment [Member] \| Nonaccrual loans [Member] \| Puerto Rico [Member] \| Commercial and Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	1,200
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Increase (decrease) in ACL	11,700
Provision for credit losses - (benefit) expense	96,601	67,816	57,519
Recoveries	24,245	14,451	14,982
Charge-offs	109,115	76,726	48,165
Allowance for credit losses	144,751	133,020	$ 127,426	$ 103,090
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	33,881	20,942
Consumer Portfolio Segment [Member] \| Bulk Sale Of Nonaccrual Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Recoveries	10,000
Consumer Portfolio Segment [Member] \| US [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	77	324
Consumer Portfolio Segment [Member] \| US [Member] \| Automobile Loan [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-offs	$ 77	$ 324