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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Effect of cash flow hedging and fair value (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Loans |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | $ 36,917 | $ 24,581 | $ 71,477 | $ 47,252
Securities and other |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 5,964 | 4,207 | 11,755 | 8,033
Deposits |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 8,590 | 1,195 | 13,855 | 2,384
Borrowings |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 5,501 | 1,074 | 9,681 | 2,084
Non-interest Income |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 8,980 | 8,961 | 18,164 | 18,270
Interest rate swap on wholesale funding | Borrowings |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: | 745 | (28) |  |
Interest rate swap on wholesale funding | Cash flow hedges | Borrowings |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: |  |  | 1,409 | (141)
Interest rate swap on variable rate loans | Loans |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: | (531) | (17) |  |
Interest rate swap on variable rate loans | Cash flow hedges | Loans |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: |  |  | (997) | (1)
Interest rate swap on securities | Securities and other |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on fair value hedges: | $ 330 | $ (68) |  |
Interest rate swap on securities | Fair Value Hedging | Securities and other |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on fair value hedges: |  |  | $ 616 | $ (203)

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