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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended | 21 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) segment | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Nonaccrual loans, interest income |  |  | $ 0 |  | $ 0 |  |  |  |
Loans under modified terms | $ 1,296,000 | $ 1,019,000 | 24,477,000 | $ 29,419,000 | 29,400,000 |  |  |  |
Amortized Cost | 1,296,000 | 1,019,000 | 24,477,000 | 29,419,000 | 29,400,000 |  |  |  |
Total Allowance for credit losses | 160,685,000 | 125,627,000 | 160,685,000 | 125,627,000 | 132,182,000 | $ 160,685,000 | $ 158,131,000 | $ 120,683,000 | $ 110,768,000
Unfunded commitments on loans modified and designated as TLMs | 0 |  | $ 0 |  | $ 1,600,000 | 0 |  |  |
TLM loans that went into default |  |  |  |  |  | 0 |  |  |
TLMs that are past due |  |  |  |  |  | 0 |  |  |
Number of operating segments | segment |  |  | 2 |  |  |  |  |  |
Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List Not Disclosed (Flag) |  |  | true |  | true |  |  |  |
Commercial Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Total Allowance for credit losses | $ 132,720,000 | $ 98,940,000 | $ 132,720,000 | $ 98,940,000 | $ 105,896,000 | $ 132,720,000 | $ 131,139,000 | $ 92,970,000 | $ 82,753,000

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