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FAIR VALUE OF FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets |  |
Derivative assets | $ 116,496 | $ 122,132
Financial Liabilities |  |
Derivative liabilities | 108,347 | 121,265
Recurring | Fair value hedges |  |
Financial Liabilities |  |
Derivative liabilities |  | 6,594
Recurring | Cash flow hedges |  |
Financial Assets |  |
Derivative assets | 8,318 | 7,461
Financial Liabilities |  |
Derivative liabilities | 159 | 5,031
Recurring | Freestanding derivatives, net |  |
Financial Assets |  |
Derivative assets | 108,178 | 114,671
Financial Liabilities |  |
Derivative liabilities | 108,178 | 114,671
Recurring | Risk participations |  |
Financial Liabilities |  |
Derivative liabilities | 10 |
Recurring | Level 2 | Fair value hedges |  |
Financial Liabilities |  |
Derivative liabilities |  | 6,594
Recurring | Level 2 | Cash flow hedges |  |
Financial Assets |  |
Derivative assets | 8,318 | 7,461
Financial Liabilities |  |
Derivative liabilities | 159 | 5,031
Recurring | Level 2 | Freestanding derivatives, net |  |
Financial Assets |  |
Derivative assets | 108,178 | 114,671
Financial Liabilities |  |
Derivative liabilities | 108,178 | 114,671
Recurring | Level 2 | Risk participations |  |
Financial Liabilities |  |
Derivative liabilities | 10 |
Agency notes | Recurring |  |
Financial Assets |  |
Securities available-for-sale: | 9,607 | 9,371
Agency notes | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: | 9,607 | 9,371
Treasury securities | Recurring |  |
Financial Assets |  |
Securities available-for-sale: |  | 234,190
Treasury securities | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: |  | 234,190
Corporate securities | Recurring |  |
Financial Assets |  |
Securities available-for-sale: | 163,949 | 151,170
Corporate securities | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: | 163,949 | 151,170
Pass-through MBS issued by GSEs | Recurring |  |
Financial Assets |  |
Securities available-for-sale: |  | 205,285
Mortgage-backed securities | 300,221 |
Pass-through MBS issued by GSEs | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: |  | 205,285
Mortgage-backed securities | 300,221 |
Agency CMOs | Recurring |  |
Financial Assets |  |
Securities available-for-sale: | 191,888 |
Marketable equity securities (Registered Mutual Funds) |  | 259,415
Agency CMOs | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: | 191,888 |
Marketable equity securities (Registered Mutual Funds) |  | 259,415
State and municipal obligations | Recurring |  |
Financial Assets |  |
Securities available-for-sale: | 25,028 | 26,809
State and municipal obligations | Recurring | Level 2 |  |
Financial Assets |  |
Securities available-for-sale: | $ 25,028 | $ 26,809

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