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DERIVATIVES AND HEDGING (Narrative) (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022
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Offsetting Assets and Liabilities [Line Items] |  |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | $ 17,800,000 |  |
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | 15,200,000 | $ 20,100,000 |
Derivative net liability position | 0 |  |
Collateral posted | 19,300,000 | 22,200,000 |
Derivative Liability, Collateral Posted, Restricted Cash | 18,300,000 |  | $ 15,900,000
Interest rate swaps [Member] |  |  |
Offsetting Assets and Liabilities [Line Items] |  |  |
Variation Margin Adjustment, Derivative Liability | $ 918,000 | $ 8,700,000 |

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- Definition Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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