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Derivative Financial Instruments (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) derivative | Dec. 31, 2022 USD ($) derivative | Dec. 31, 2021 derivative
Junior subordinated debentures | $ 47,850 | $ 50,507 |
Notional amount, Assets | 1,619,026 | 1,084,955 |
Short term advances and brokered CD's | 826,800 | 871,500 |
Derivative instruments | 721,000 |  |
Customer [Member] |  |  |
Derivative instruments | 360,500 | 110,600 |
Bank [Member] |  |  |
Derivative instruments | 360,500 | 110,600 |
Customer and Bank [Member] |  |  |
Derivative instruments |  | 221,200 |
Cash Flow Hedging [Member] |  |  |
Amount reclassified from accumulated other comprehensive loss to interest expense | 25,400 | $ 300 |
Amount to be reclassified from the accumulated comprehensive income (loss) into earnings | $ 19,700 |  |
Number of derivative contracts terminated | derivative | 0 | 4 | 0
Notional amount of derivative instruments terminated |  | $ 170,800 |
Net gain |  | 6,000 |
Income recognized | $ 4,700 | 700 |
Gain (loss) on termination of swaps |  | 6,000 |
Not Designated as Hedging Instrument [Member] |  |  |
Notional amount, Assets | 722,000 | 221,200 |
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |
Notional amount, Assets | 825,800 | 871,500 |
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |  |
Amount of hedged item | 902,500 | 273,600 |
Interest Rate Swap [Member] |  |  |
Notional amount, Assets | 902,500 | 273,600 |
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Notional amount, Assets | 361,486 | 110,598 |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |
Notional amount, Assets | 555,000 | 700,750 |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |  |
Notional amount, Assets | 702,540 | $ 273,607 |
Portfolio Layer Hedges on Closed Portfolio of Securities Available for Sale [Member] |  |  |
Notional amount, Assets | 200,000 |  |
Portfolio Layer Hedges on Closed Portfolio of Securities Available for Sale [Member] | Designated as Hedging Instrument [Member] |  |  |
Notional amount, Assets | 283,195 |  |
Notional amount | 200,000 |  |
Portfolio Layer Hedges on Closed Portfolio of Loans [Member] |  |  |
Notional amount, Assets | 500,000 |  |
Portfolio Layer Hedges on Closed Portfolio of Loans [Member] | Designated as Hedging Instrument [Member] |  |  |
Notional amount, Assets | 2,590,087 |  |
Notional amount | $ 500,000 |  |

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