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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans by Class Modified as Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 USD ($) loan | Mar. 31, 2021 USD ($) loan
Commercial | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 1 |
Pre-Modification Outstanding Recorded Investment | $ 12,840 |
Post-Modification Outstanding Recorded Investment | $ 12,840 |
Consumer | Single family residential mortgage |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 1,800
Post-Modification Outstanding Recorded Investment |  | $ 1,800

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