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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Composition of Nonaccrual Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | $ 60,556 | $ 55,251
Nonaccrual Loans with no ACL | 54,974 | 34,864
Commercial | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 9,713 | 22,613
Nonaccrual Loans with no ACL | 4,218 | 10,959
Commercial | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 1,864 | 910
Nonaccrual Loans with no ACL | 1,864 | 910
Commercial | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 1,118 | 0
Nonaccrual Loans with no ACL | 1,118 | 0
Commercial | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 7,569 | 10,417
Nonaccrual Loans with no ACL | 7,481 | 5,613
Consumer | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 39,836 | 21,116
Nonaccrual Loans with no ACL | 39,836 | 17,187
Consumer | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total non-accrual loans | 456 | 195
Nonaccrual Loans with no ACL | $ 457 | $ 195

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