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DERIVATIVES AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
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Derivative [Line Items] |  |
Liability for cash collateral received from counterparties | $ 10,200,000 | $ 0
Receivable for cash collateral paid to counterparties | 100,000 | 5,300,000
Notional amount of open interest rate swap agreements | 604,849,000 | 1,335,485,000
Interest rate swaps, back-to-back |  |
Derivative [Line Items] |  |
Notional amount of open interest rate swap agreements | $ 260,000,000 | $ 287,000,000

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