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Securities (Amortized Cost and Fair Value of Debt Securities Held to Maturity) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | $ 2,231,335 | $ 2,435,663
Securities Held to Maturity, Gross Unrealized Gains | 329 | 169
Securities Held to Maturity, Gross Unrealized Losses | 148,592 | 202,306
Securities Held to Maturity, Fair Value | 2,083,072 | 2,233,526
U.S. Treasury And Government Agency Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | 383,892 | 394,689
Securities Held to Maturity, Gross Unrealized Gains | 160 |
Securities Held to Maturity, Gross Unrealized Losses | 34,943 | 45,876
Securities Held to Maturity, Fair Value | 349,109 | 348,813
Municipal Obligations [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | 549,495 | 623,907
Securities Held to Maturity, Gross Unrealized Gains | 169 | 169
Securities Held to Maturity, Gross Unrealized Losses | 15,089 | 20,867
Securities Held to Maturity, Fair Value | 534,575 | 603,209
Residential Mortgage-Backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | 534,652 | 573,057
Securities Held to Maturity, Gross Unrealized Losses | 42,703 | 61,525
Securities Held to Maturity, Fair Value | 491,949 | 511,532
Commercial Mortgage-Backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | 741,086 | 818,604
Securities Held to Maturity, Gross Unrealized Losses | 55,032 | 72,854
Securities Held to Maturity, Fair Value | 686,054 | 745,750
Collateralized Mortgage Obligations [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities Held to Maturity, Gross Amortized Cost | 22,210 | 25,406
Securities Held to Maturity, Gross Unrealized Losses | 825 | 1,184
Securities Held to Maturity, Fair Value | $ 21,385 | $ 24,222

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