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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Loans |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | $ 24,581 | $ 23,191 | $ 47,252 | $ 47,396
Securities and other |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 4,207 | 3,992 | 8,033 | 7,971
Deposits |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 1,195 | 2,603 | 2,384 | 5,554
Borrowings |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 1,074 | 1,826 | 2,084 | 3,637
Non-interest Income |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 8,961 | 9,505 | 18,270 | 19,753
Interest rate swap on wholesale funding | Cash flow hedges | Borrowings |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: | (28) | (196) | (141) | (384)
Interest rate swap on variable rate loans | Cash flow hedges | Loans |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on cash flow hedges: | (17) | 89 | (1) | 97
Interest rate swap on securities | Fair Value Hedging | Securities and other |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on fair value hedges: | $ (68) | $ (140) | $ (203) | $ (276)

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