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INCOME TAXES - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 01, 2020
Income Tax Contingency [Line Items] |  |  |  |
Maximum corporate tax rate | 37.50% | 37.50% | 37.50% |
Net deferred tax asset | $ 155,584 | $ 208,482 |  |
Deferred tax asset related to NOLs | 279,900 | 177,900 |  |
Valuation allowance | 185,506 | 107,323 |  |
Income tax expense | $ 142,512 | 146,792 | $ 14,050 |
Minimum percentage of bank net taxable income for paying income tax at normal rate | 20.00% |  |  |
Current income tax expense | $ 88,296 | 28,469 | 18,421 |
NOL and capital losses carryforward | 72,485 | 137,860 |  |
Year 2023 Through 2027 [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
NOL and capital losses carryforward | 61,200 |  |  |
Year 2023 [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
NOL and capital losses carryforward | 30,500 |  |  |
Santander [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
UTBs |  |  |  | $ 1,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 200 |  |  |
Benefit recognized from expiration of uncertain tax positions acquired | 400 |  |  |
U S [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Income tax expense | 10,300 | 6,800 | 4,900 |
Subsidiaries [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net deferred tax asset | 155,600 | 208,400 |  |
Valuation allowance | 149,500 | 69,700 |  |
Parent Company [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance | 36,000 |  |  |
Income tax expense | $ 3,448 | $ 2,854 | $ 2,429 |
Domestic Country [Member] | Subsidiaries [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Dividend received deduction | 100.00% |  |  |
Domestic Country [Member] | Other taxable domestic corporations [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Dividend received deduction | 85.00% |  |  |

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