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DERIVATIVES AND HEDGING ACTIVITIES - Fair Value Hedges Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
DERIVATIVES AND HEDGING ACTIVITIES |  |  |
Interest income from swap transaction |  | $ 0 |
Fair value hedges | Designated as Hedging Instrument |  |  |
DERIVATIVES AND HEDGING ACTIVITIES |  |  |
Clearing house related to the fair value derivatives | $ 1,300,000 |  | $ 6,500,000
Fair value hedges | Interest Rate Swaps | Designated as Hedging Instrument |  |  |
DERIVATIVES AND HEDGING ACTIVITIES |  |  |
Average fixed interest rate | 4.82% |  |
Mortgage loans - Amortized Cost | $ 719,500,000 |  | 729,500,000
Last-of-layer in the open hedge relationship | 500,000,000.0 |  | 500,000,000.0
Basis adjustment associated with the hedge | 1,300,000 |  | $ 6,600,000
Interest income from swap transaction | $ 628,000 |  |

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- Definition Amount payable to other broker-dealer and clearing organization, including, but not limited to, security failed-to-receive, deposit received for security loaned, open transaction, and floor-brokerage payable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
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