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LOANS AND ALLOWANCE - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | $ 68,755 |  | $ 78,302 |  |  |
Allowance on Collateral Dependent Loans | 205,782 | $ 221,147 | 223,277 | $ 226,702 | $ 226,275 | $ 195,397
Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 39,343 |  | 42,101 |  |  |
Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 8 |  | 10 |  |  |
Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 17,145 |  | 26,534 |  |  |
Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 10,568 |  | 6,986 |  |  |
Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,464 |  | 2,382 |  |  |
Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 227 |  | 289 |  |  |
Allowance on Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 14,866 |  | 11,512 |  |  |
Decrease in individually evaluated for impairment | 9,500 |  |  |  |  |
Net recoveries | 3,400 |  |  |  |  |
Allowance on Collateral Dependent Loans | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 14,542 |  | 8,367 |  |  |
Net recoveries | 6,200 |  |  |  |  |
Allowance on Collateral Dependent Loans | Construction |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 1 |  | 1 |  |  |
Allowance on Collateral Dependent Loans | Commercial real estate, non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 57 |  | 2,064 |  |  |
Decrease in individually evaluated for impairment | 9,400 |  |  |  |  |
Net recoveries | (2,000) |  |  |  |  |
Allowance on Collateral Dependent Loans | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 0 |  | 776 |  |  |
Allowance on Collateral Dependent Loans | Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 235 |  | 260 |  |  |
Allowance on Collateral Dependent Loans | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance on Collateral Dependent Loans | 31 |  | 44 |  |  |
Commercial Real Estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 27,713 |  | 33,520 |  |  |
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 | 17,145 |  | 26,534 |  |  |
Commercial Real Estate | Commercial real estate, owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 10,568 |  | 6,986 |  |  |
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 | 1,699 |  | 2,681 |  |  |
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 | 8 |  | 10 |  |  |
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 | 1,464 |  | 2,382 |  |  |
Residential Real Estate | Home equity |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 227 |  | 289 |  |  |
Other |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 39,343 |  | 42,101 |  |  |
Other | Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 39,343 |  | 42,101 |  |  |
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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