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ALLOWANCE FOR CREDIT LOSSES ON LOANS AND FINANCE LEASES - Carrying Amount of Portfolios (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | $ 11,552,825 | $ 11,060,658 |  |
Allowance for credit losses | 260,464 | 269,030 | $ 385,887 | $ 155,139
Residenital Mortgage Loans [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | 2,847,290 | 2,978,895 |  |
Allowance for credit losses | $ 62,760 | $ 74,837 | 120,311 | 44,806
Residenital Mortgage Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 2.20% | 2.51% |  |
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | $ 2,886,263 | $ 2,887,251 |  |
Allowance for credit losses | $ 32,906 | $ 34,284 | 37,944 | 15,198
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 1.14% | 1.19% |  |
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | $ 2,358,851 | $ 2,167,469 |  |
Allowance for credit losses | $ 35,064 | $ 52,771 | 109,342 | 39,194
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 1.49% | 2.43% |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | $ 132,953 | $ 138,999 |  |
Allowance for credit losses | $ 2,308 | $ 4,048 | 5,380 | 2,370
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 1.74% | 2.91% |  |
Consumer Portfolio Segment [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost of loans | $ 3,327,468 | $ 2,888,044 |  |
Allowance for credit losses | $ 127,426 | $ 103,090 | $ 112,910 | $ 53,571
Consumer Portfolio Segment [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 3.83% | 3.57% |  |
Loan Total [Member] | Allowance for loan and lease losses, numerator [Member] | Amortized cost, denominator [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses to amortized cost | 2.25% | 2.43% |  |

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