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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) loan_segment loan | Dec. 31, 2023 USD ($) loan_segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans held for sale | $ 18,934 | $ 18,934 | $ 9,094 |  |
Loans | 12,486,027 | 12,486,027 | 12,003,894 |  |
Year 2 | 2,546,512 | 2,546,512 | 2,680,834 |  |
Year 3 | $ 2,063,941 | $ 2,063,941 | 1,843,080 |  |
Number of portfolio loan segments | loan_segment | 10 | 10 |  |  |
Increase in allowance for credit losses |  | $ 18,300 |  |  |
Net charge-offs |  | 25,600 |  |  |
Loans charged off |  | 28,039 | 6,601 | $ 11,884 |
Provision for credit losses |  | 7,300 | 0 | 0 |
CECL Day 1 non-PCD provision for credit losses |  |  | 13,955 |  |
Accrual for off-balance sheet commitments | $ 19,500 | 19,500 | 23,300 | $ 20,500 |
Provision for credit losses - unfunded commitments |  | $ (3,800) | 0 |  |
Standby letters of credit |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Term |  | 2 years |  |  |
Impact of adopting ASC 326 |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Accrual for off-balance sheet commitments |  |  |  |  | $ 20,500
Allowance on Collateral Dependent Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Increase (decrease) in collateral dependent loans |  | $ 17,600 |  |  |
Level One |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Provision for credit losses - unfunded commitments |  | 0 | 2,800 |  |
Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 3,670,948 | 3,670,948 | 3,437,126 |  |
Year 2 | 498,757 | 498,757 | 576,080 |  |
Year 3 | 272,427 | 272,427 | 159,416 |  |
Commercial and industrial loans | Allowance on Collateral Dependent Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Increase (decrease) in collateral dependent loans |  | 10,100 |  |  |
Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,400,839 | 2,400,839 | 2,407,475 |  |
Year 2 | 535,962 | 535,962 | 615,408 |  |
Year 3 | 542,551 | 542,551 | 596,899 |  |
Commercial real estate, non-owner occupied | Allowance on Collateral Dependent Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Increase (decrease) in collateral dependent loans |  | 9,000 |  |  |
Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,288,921 | 2,288,921 | 2,096,655 |  |
Year 2 | 704,355 | 704,355 | 494,049 |  |
Year 3 | 448,226 | 448,226 | 405,136 |  |
Commercial And Industrial Loan One |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans charged off | $ 13,700 |  |  |  |
Commercial And Industrial Loan Two |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Number of loans charged off | loan | 2 |  |  |  |
Loans charged off | $ 5,400 |  |  |  |
Commercial real estate, owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 1,162,083 | 1,162,083 | 1,246,528 |  |
Year 2 | 208,567 | 208,567 | 324,004 |  |
Year 3 | 269,848 | 269,848 | 335,062 |  |
Commercial real estate, owner occupied | Commercial Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Increase (decrease) in collateral dependent loans |  | 2,500 |  |  |
Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 79,200 | 79,200 | 51,000 |  |
Increase in past due loans |  | 28,200 |  |  |
30-59 Days Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 34,075 | 34,075 | 29,051 |  |
Increase in past due loans |  | 5,000 |  |  |
30-59 Days Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 5,021 | 5,021 | 4,904 |  |
30-59 Days Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 12,995 | 12,995 | 5,946 |  |
30-59 Days Past Due | Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 11,810 | 11,810 | 8,607 |  |
30-59 Days Past Due | Commercial real estate, owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 0 | 0 | 4,495 |  |
60-89 Days Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 11,189 | 11,189 | 5,935 |  |
Increase in past due loans |  | 5,300 |  |  |
60-89 Days Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 1,622 | 1,622 | 434 |  |
60-89 Days Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 195 | 195 | 881 |  |
60-89 Days Past Due | Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 5,472 | 5,472 | 2,278 |  |
60-89 Days Past Due | Commercial real estate, owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 104 | 104 | 0 |  |
90 Days or More Past Due |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 33,980 | 33,980 | 16,021 |  |
Increase in past due loans |  | 18,000 |  |  |
90 Days or More Past Due | Commercial and industrial loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 6,858 | 6,858 | 2,474 |  |
90 Days or More Past Due | Commercial real estate, non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 11,465 | 11,465 | 5,153 |  |
90 Days or More Past Due | Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 12,143 | 12,143 | 5,811 |  |
90 Days or More Past Due | Commercial real estate, owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | $ 110 | $ 110 | $ 319 |  |

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