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Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | $ 15 | $ 8
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 804,600 | 835,522
Securities available for sale, 12 months or longer, Unrealized Losses | 127,433 | 151,546
Securities available for sale, Fair Value, Total | 804,615 | 835,530
Securities available for sale, Unrealized Losses, Total | 127,433 | 151,546
Total AFS debt securities with unrealized losses, Less than 12 months, Fair Value | 15 | 8
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses | 0 | 0
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value | 804,600 | 835,522
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses | 127,433 | 151,546
Total AFS debt securities with unrealized losses, Fair Value | 804,615 | 835,530
Total AFS debt securities with unrealized losses, Unrealized Losses | 127,433 | 151,546
Other Debt Obligations [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Total AFS debt securities with unrealized losses, Less than 12 months, Fair Value | 0 |
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses | 0 |
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value | 0 |
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses | 0 |
Total AFS debt securities with unrealized losses, Fair Value | 0 |
Total AFS debt securities with unrealized losses, Unrealized Losses | 0 |
U.S. Government Agency And Government Sponsored Enterprises [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 0 | 0
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 22,588 | 21,811
Securities available for sale, 12 months or longer, Unrealized Losses | 1,947 | 2,724
Securities available for sale, Fair Value, Total | 22,588 | 21,811
Securities available for sale, Unrealized Losses, Total | 1,947 | 2,724
Mortgage-Backed Securities [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 15 | 8
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 782,012 | 813,711
Securities available for sale, 12 months or longer, Unrealized Losses | 125,486 | 148,822
Securities available for sale, Fair Value, Total | 782,027 | 813,719
Securities available for sale, Unrealized Losses, Total | 125,486 | 148,822
Mortgage-Backed Securities [Member] | Federal National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 0 | 8
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 371,447 | 388,191
Securities available for sale, 12 months or longer, Unrealized Losses | 49,964 | 61,219
Securities available for sale, Fair Value, Total | 371,447 | 388,199
Securities available for sale, Unrealized Losses, Total | 49,964 | 61,219
Mortgage-Backed Securities [Member] | Federal Home Loan Mortgage Corporation [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 0 | 0
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 301,234 | 314,854
Securities available for sale, 12 months or longer, Unrealized Losses | 50,573 | 59,665
Securities available for sale, Fair Value, Total | 301,234 | 314,854
Securities available for sale, Unrealized Losses, Total | 50,573 | 59,665
Mortgage-Backed Securities [Member] | Government National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 15 | 0
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 86,117 | 86,475
Securities available for sale, 12 months or longer, Unrealized Losses | 19,415 | 21,409
Securities available for sale, Fair Value, Total | 86,132 | 86,475
Securities available for sale, Unrealized Losses, Total | 19,415 | 21,409
Collateralized Mortgage Obligations [Member] | Federal National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 0 | 0
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 8,204 | 8,611
Securities available for sale, 12 months or longer, Unrealized Losses | 1,927 | 2,343
Securities available for sale, Fair Value, Total | 8,204 | 8,611
Securities available for sale, Unrealized Losses, Total | 1,927 | 2,343
Collateralized Mortgage Obligations [Member] | Federal Home Loan Mortgage Corporation [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Less than 12 months, Fair Value | 0 | 0
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 0
Securities available for sale, 12 months or longer, Fair Value | 15,010 | 15,580
Securities available for sale, 12 months or longer, Unrealized Losses | 3,607 | 4,186
Securities available for sale, Fair Value, Total | 15,010 | 15,580
Securities available for sale, Unrealized Losses, Total | $ 3,607 | $ 4,186

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