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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Composition of Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | $ 52,558 | $ 35,900
Nonaccrual Loans with no ACL | 27,891 | 32,066
Commercial | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | 28,594 | 13,821
Nonaccrual Loans with no ACL | 9,137 | 13,088
Commercial | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | 0 | 4,654
Nonaccrual Loans with no ACL | 0 | 4,654
Commercial | SBA |  |
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | 16,653 | 3,749
Nonaccrual Loans with no ACL | 11,443 | 648
Consumer | Single family residential mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | 7,076 | 13,519
Nonaccrual Loans with no ACL | 7,076 | 13,519
Consumer | Other consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total Nonaccrual Loans | 235 | 157
Nonaccrual Loans with no ACL | $ 235 | $ 157

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