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Derivative Instruments and Hedging Activities (Schedule of Impact of Derivatives on Balance Sheet) (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Designated as hedging instruments |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | $ 0 | $ 0
Estimated fair value of derivative liabilities | 44,516 | 16,379
Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 119,659 | 89,815
Estimated fair value of derivative liabilities | 324,811 | 326,301
Derivatives not designated as hedging instruments | Interest Rate Contract |  |
Derivative [Line Items] |  |
Notional Amount | 16,877,530 | 10,276,754
Estimated fair value of derivative assets | 118,256 | 89,310
Estimated fair value of derivative liabilities | 320,872 | 322,329
Derivatives not designated as hedging instruments | Interest Rate Contract | SOFR |  |
Derivative [Line Items] |  |
Notional Amount | 5,470,000 |
Derivatives not designated as hedging instruments | Mortgage derivatives | Mortgage derivatives - interest rate lock commitments |  |
Derivative [Line Items] |  |
Notional Amount | 68,311 | 50,218
Estimated fair value of derivative assets | 912 | 350
Estimated fair value of derivative liabilities | 0 | 0
Derivatives not designated as hedging instruments | Mortgage derivatives | Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans |  |
Derivative [Line Items] |  |
Notional Amount | 96,000 | 76,500
Estimated fair value of derivative assets | 405 | 155
Estimated fair value of derivative liabilities | 0 | 0
Derivatives not designated as hedging instruments | Risk participation agreements |  |
Derivative [Line Items] |  |
Notional Amount | 735,282 | 635,891
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 2 | 3
Derivatives not designated as hedging instruments | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Notional Amount | 32,522 | 20,439
Estimated fair value of derivative assets | 86 | 0
Estimated fair value of derivative liabilities | 0 | 516
Derivatives not designated as hedging instruments | Visa Derivative |  |
Derivative [Line Items] |  |
Notional Amount | 0 | 0
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 3,937 | 3,453
Cash flow hedges |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 20,469 | 8,286
Cash flow hedges | Interest Rate Contract |  |
Derivative [Line Items] |  |
Notional Amount | 8,900,000 | 5,250,000
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 20,469 | 8,286
Cash flow hedges | Interest Rate Contract | SOFR |  |
Derivative [Line Items] |  |
Notional Amount | 3,400,000 |
Fair value hedges |  |
Derivative [Line Items] |  |
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | 24,047 | 8,093
Fair value hedges | Interest Rate Contract |  |
Derivative [Line Items] |  |
Notional Amount | 3,510,611 | 2,230,232
Estimated fair value of derivative assets | 0 | 0
Estimated fair value of derivative liabilities | $ 24,047 | $ 8,093

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