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LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |
Accrued interest | $ 85,900 | $ 85,900 |  | $ 88,200 |  |  |
Loans receivable, excluding accrued interest | 15,232,019 | $ 15,232,019 |  | 14,311,987 |  |  |
Loans held for sale, average life from purchase to sale |  | 30 days |  |  |  |  |
Allowance for credit loss, excluding accrued interest | 147,418 | $ 147,418 | $ 141,076 | 136,775 | $ 132,436 | $ 133,296 | $ 135,311
Allowance for credit loss, period increase |  | 10,600 |  |  |  |  |
Number of commitments to lend additional funds (commitment) | 0 | 0 |  |  |  |  |
Total consumer loans receivable | 13,708,767 | 13,708,767 |  | 13,104,883 |  |  |
Asset Pledged as Collateral |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |
Total consumer loans receivable | 7,900,000 | 7,900,000 |  | 8,000,000 |  |  |
Consumer Installment Loans |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |
Total nonaccrual loans | 2,000 | 2,000 |  |  |  |  |
Commercial and industrial, including specialized lending |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |
Allowance for credit loss, excluding accrued interest | 36,262 | 36,262 | $ 30,584 | 29,379 | $ 23,721 | $ 23,003 | $ 23,503
Total consumer loans receivable | 7,570,793 | 7,570,793 |  | 7,002,019 |  |  |
Par value | 32,050 | 32,050 |  |  |  |  |
Commercial Real Estate | Other commercial and industrial | Collateral Dependent Loan |  |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |  |  |
Loans receivable, excluding accrued interest | $ 18,300 | $ 18,300 |  | $ 31,900 |  |  |

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