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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) loan_segment | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans held for sale | $ 40,652,000 |  | $ 40,652,000 |  | $ 18,934,000
Loans | 12,646,808,000 |  | 12,646,808,000 |  | 12,486,027,000
Interest income recognized on non-accrual loans | 0 | $ 0 | 0 | $ 0 |
Payment default | 1,700,000 | 0 | $ 2,900,000 | 0 |
Number of loan segments | loan_segment |  |  | 10 |  |
Allowance for credit losses increase (decrease) | (1,700,000) |  | $ (17,100,000) |  |
Net charge-offs | 6,700,000 |  | 48,600,000 |  |
Provision for credit losses | $ 5,000,000 | 5,000,000 | $ 31,500,000 | 5,000,000 |
Standby letters of credit usual term | 2 years |  | 2 years |  |
Increase (decrease) in provision | $ 0 | $ (3,000,000) | $ 0 | $ (3,000,000) |
Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,251,351,000 |  | 2,251,351,000 |  | 2,400,839,000
Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 4,041,217,000 |  | 4,041,217,000 |  | 3,670,948,000
Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 814,704,000 |  | 814,704,000 |  | 957,545,000
Individuals' loans for household and other personal expenditures |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 158,480,000 |  | 158,480,000 |  | 168,388,000
Residential |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,366,943,000 |  | 2,366,943,000 |  | 2,288,921,000
Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 95,000,000 |  | 95,000,000 |  | 79,200,000
Increase (decrease) in past due loans |  |  | 15,800,000 |  |
30-59 Days Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 30,287,000 |  | 30,287,000 |  | 34,075,000
Increase (decrease) in past due loans |  |  | (3,800,000) |  |
30-59 Days Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 8,680,000 |  | 8,680,000 |  | 12,995,000
Increase (decrease) in past due loans |  |  | (4,300,000) |  |
30-59 Days Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 1,906,000 |  | 1,906,000 |  | 5,021,000
Increase (decrease) in past due loans |  |  | (3,100,000) |  |
30-59 Days Past Due | Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,522,000 |  | 2,522,000 |  | 0
Increase (decrease) in past due loans |  |  | 2,500,000 |  |
30-59 Days Past Due | Individuals' loans for household and other personal expenditures |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,567,000 |  | 2,567,000 |  | 635,000
Increase (decrease) in past due loans |  |  | 1,900,000 |  |
30-59 Days Past Due | Residential |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 10,377,000 |  | 10,377,000 |  | 11,810,000
60-89 Days Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 18,773,000 |  | 18,773,000 |  | 11,189,000
Increase (decrease) in past due loans |  |  | 7,600,000 |  |
60-89 Days Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 485,000 |  | 485,000 |  | 195,000
60-89 Days Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 7,805,000 |  | 7,805,000 |  | 1,622,000
60-89 Days Past Due | Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 1,646,000 |  | 1,646,000 |  | 1,957,000
Increase (decrease) in past due loans |  |  | 6,200,000 |  |
60-89 Days Past Due | Individuals' loans for household and other personal expenditures |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 385,000 |  | 385,000 |  | 192,000
60-89 Days Past Due | Residential |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 6,029,000 |  | 6,029,000 |  | 5,472,000
90 Days or More Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 45,944,000 |  | 45,944,000 |  | 33,980,000
Increase (decrease) in past due loans |  |  | 12,000,000 |  |
90 Days or More Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 16,404,000 |  | 16,404,000 |  | 11,465,000
Increase (decrease) in past due loans |  |  | 4,900,000 |  |
90 Days or More Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 8,490,000 |  | 8,490,000 |  | 6,858,000
Increase (decrease) in past due loans |  |  | 1,600,000 |  |
90 Days or More Past Due | Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
90 Days or More Past Due | Individuals' loans for household and other personal expenditures |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,000 |  | 2,000 |  | 8,000
90 Days or More Past Due | Residential |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | $ 16,225,000 |  | 16,225,000 |  | $ 12,143,000
Increase (decrease) in past due loans |  |  | $ 4,100,000 |  |

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