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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Accounted for on a Nonaccrual Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | $ 143,027 | $ 134,808
Financing receivable, nonaccrual, no allowance | 71,497 | 60,231
Commercial, financial and agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 11,583 | 11,094
Financing receivable, nonaccrual, no allowance | 1,452 | 33
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 400 | 420
Indirect automobile |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 285 | 346
Real estate – construction and development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 548 | 523
Real estate – commercial and farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 14,416 | 13,203
Financing receivable, nonaccrual, no allowance | 2,510 | 1,464
Real estate – residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | 115,795 | 109,222
Financing receivable, nonaccrual, no allowance | 67,535 | 58,734
Real estate – residential | GNMA |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, nonaccrual | $ 75,000 | $ 69,600

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