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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | $ 66,670 |  | $ 60,666 |  |  |
Allowance on Collateral Dependent Loans | 187,828 | $ 189,537 | 204,934 | $ 205,782 | $ 221,147 | $ 223,277
Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 15,685 |  | 32,029 |  |  |
Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 4 |  | 7 |  |  |
Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 38,959 |  | 17,516 |  |  |
Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 10,575 |  | 9,452 |  |  |
Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,241 |  | 1,439 |  |  |
Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 206 |  | 223 |  |  |
Allowance on Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Increase (decrease) in individually evaluated for impairment | 6,000 |  |  |  |  |
Increase (decrease) allowance for credit loss, recovery | (4,400) |  |  |  |  |
Allowance on Collateral Dependent Loans | 7,400 |  | 11,769 |  |  |
Allowance on Collateral Dependent Loans | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Increase (decrease) in individually evaluated for impairment | (16,300) |  |  |  |  |
Increase (decrease) allowance for credit loss, recovery | (9,200) |  |  |  |  |
Allowance on Collateral Dependent Loans | 2,312 |  | 11,474 |  |  |
Allowance on Collateral Dependent Loans | Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 0 |  | 0 |  |  |
Allowance on Collateral Dependent Loans | Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Increase (decrease) in individually evaluated for impairment | 21,400 |  |  |  |  |
Increase (decrease) allowance for credit loss, recovery | 4,800 |  |  |  |  |
Allowance on Collateral Dependent Loans | 4,864 |  | 35 |  |  |
Allowance on Collateral Dependent Loans | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 0 |  | 0 |  |  |
Allowance on Collateral Dependent Loans | Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 198 |  | 230 |  |  |
Allowance on Collateral Dependent Loans | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 26 |  | 30 |  |  |
Commercial Real Estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 49,534 |  | 26,968 |  |  |
Commercial Real Estate | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Commercial Real Estate | Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Commercial Real Estate | Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 38,959 |  | 17,516 |  |  |
Commercial Real Estate | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 10,575 |  | 9,452 |  |  |
Commercial Real Estate | Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Commercial Real Estate | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Residential Real Estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,451 |  | 1,669 |  |  |
Residential Real Estate | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Residential Real Estate | Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 4 |  | 7 |  |  |
Residential Real Estate | Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Residential Real Estate | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Residential Real Estate | Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,241 |  | 1,439 |  |  |
Residential Real Estate | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 206 |  | 223 |  |  |
Other |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 15,685 |  | 32,029 |  |  |
Other | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 15,685 |  | 32,029 |  |  |
Other | Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Other | Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Other | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Other | Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Other | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | $ 0 |  | $ 0 |  |  |

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