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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 4,784,420 | $ 4,787,190
Estimated Fair Value Asset (Liability) | (18,670) | (30,289)
Impact of settled to market contracts | 19,400 | 26,700
Non-hedging derivatives |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 24,185 | 11,104
Estimated Fair Value Asset (Liability) | 165 | 34
Interest rate swaps |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 5,500 |
Commitments to lend | Non-hedging derivatives |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 24,185 | $ 11,104
Weighted Average Maturity (In years) | 2 months 12 days | 2 months 12 days
Estimated Fair Value Asset (Liability) | $ 165 | $ 34
Cash flow hedges |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 600,000 |
Cash flow hedges | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 800,000 | 800,000
Estimated Fair Value Asset (Liability) | 2,131 | 1,658
Cash flow hedges | Interest rate swaps | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 800,000 | 600,000
Cash flow hedges | Interest rate swaps | Designated as hedging | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 600,000 | $ 600,000
Weighted Average Maturity (In years) | 1 year 1 month 6 days | 1 year 10 months 24 days
Weighted Average Rate, Received | 3.64% | 3.64%
Weighted Average Rate, Contract pay rate | 5.15% | 5.35%
Estimated Fair Value Asset (Liability) | $ 1,015 | $ 0
Cash flow hedges | Interest rate collars | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount |  | 200,000
Cash flow hedges | Interest rate collars | Designated as hedging | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 200,000 | $ 200,000
Weighted Average Maturity (In years) | 1 year 9 months 18 days | 2 years 6 months
Estimated Fair Value Asset (Liability) | $ 1,116 | $ 1,658
Economic hedges | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 3,960,235 | 3,976,086
Estimated Fair Value Asset (Liability) | (20,966) | (31,981)
Economic hedges | Interest rate swaps | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 3,600,000 | 3,600,000
Economic hedges | Interest rate swaps | Designated as hedging | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 1,802,749 | $ 1,795,562
Weighted Average Maturity (In years) | 4 years 7 months 6 days | 4 years 10 months 24 days
Weighted Average Rate, Received | 4.60% | 4.36%
Weighted Average Rate, Contract pay rate | 6.10% | 6.27%
Estimated Fair Value Asset (Liability) | $ (29,675) | $ (63,865)
Economic hedges | Interest rate swaps | Designated as hedging | Interest rate swap on tax advantaged economic development bond |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 5,528 | $ 6,202
Weighted Average Maturity (In years) | 5 years 2 months 12 days | 5 years 10 months 24 days
Weighted Average Rate, Received | 5.70% | 5.82%
Weighted Average Rate, Contract pay rate | 5.09% | 5.09%
Estimated Fair Value Asset (Liability) | $ (185) | $ (172)
Economic hedges | Reverse interest rate swaps | Designated as hedging | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 1,802,749 | $ 1,795,562
Weighted Average Maturity (In years) | 4 years 7 months 6 days | 4 years 10 months 24 days
Weighted Average Rate, Received | 6.10% | 6.27%
Weighted Average Rate, Contract pay rate | 4.60% | 4.36%
Estimated Fair Value Asset (Liability) | $ 8,595 | $ 32,053
Economic hedges | Risk participation agreements with dealer banks | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 343,673 | $ 376,553
Weighted Average Maturity (In years) | 5 years 3 months 18 days | 5 years 6 months
Estimated Fair Value Asset (Liability) | $ 247 | $ (18)
Economic hedges | Forward sale commitments | Designated as hedging |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 5,536 | $ 2,207
Weighted Average Maturity (In years) | 2 months 12 days | 2 months 12 days
Estimated Fair Value Asset (Liability) | $ 52 | $ 21

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