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DERIVATIVES AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Liability for cash collateral received from counterparties	$ 2,600	$ 3,300
Receivable for cash collateral paid to counterparties	8,200	16,500
Notional amount of open interest rate swap agreements	1,601,281	2,322,816
Interest rate swaps, back-to-back
Derivative [Line Items]
Notional amount of open interest rate swap agreements	$ 275,000	$ 246,000

X

- Definition

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

+ References

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-Publisher FASB
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-Topic 210
-SubTopic 20
-Section 50
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-Section 45
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- Definition

Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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-Publisher FASB
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-SubTopic 10
-Section 50
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