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Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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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 | $ 148,933 | $ 681,223
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses | 2,684 | 9,046
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value | 206,249 | 176,627
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses | 45,753 | 53,433
Total AFS debt securities with unrealized losses, Fair Value | 355,182 | 857,850
Total AFS debt securities with unrealized losses, Unrealized Losses | 48,437 | 62,479
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 | 17,275 | 3,652
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses | 217 | 11
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value | 0 | 0
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses | 0 | 0
Total AFS debt securities with unrealized losses, Fair Value | 17,275 | 3,652
Total AFS debt securities with unrealized losses, Unrealized Losses | 217 | 11
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 | 131,658 | 677,571
Securities available for sale, Less than 12 months, Unrealized Losses | 2,467 | 9,035
Securities available for sale, 12 months or longer, Fair Value | 206,249 | 176,627
Securities available for sale, 12 months or longer, Unrealized Losses | 45,753 | 53,433
Securities available for sale, Fair Value, Total | 337,907 | 854,198
Securities available for sale, Unrealized Losses, Total | 48,220 | 62,468
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 | 258,197
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 3,525
Securities available for sale, 12 months or longer, Fair Value | 19,438 | 19,732
Securities available for sale, 12 months or longer, Unrealized Losses | 4,851 | 5,922
Securities available for sale, Fair Value, Total | 19,438 | 277,929
Securities available for sale, Unrealized Losses, Total | 4,851 | 9,447
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 | 228,956
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 2,941
Securities available for sale, 12 months or longer, Fair Value | 67,826 | 75,647
Securities available for sale, 12 months or longer, Unrealized Losses | 17,666 | 22,414
Securities available for sale, Fair Value, Total | 67,826 | 304,603
Securities available for sale, Unrealized Losses, Total | 17,666 | 25,355
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 | 131,658 | 113,772
Securities available for sale, Less than 12 months, Unrealized Losses | 2,467 | 2,120
Securities available for sale, 12 months or longer, Fair Value | 107,980 | 69,935
Securities available for sale, 12 months or longer, Unrealized Losses | 20,032 | 21,090
Securities available for sale, Fair Value, Total | 239,638 | 183,707
Securities available for sale, Unrealized Losses, Total | 22,499 | 23,210
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 | 9,742
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 16
Securities available for sale, 12 months or longer, Fair Value | 3,635 | 3,658
Securities available for sale, 12 months or longer, Unrealized Losses | 1,012 | 1,304
Securities available for sale, Fair Value, Total | 3,635 | 13,400
Securities available for sale, Unrealized Losses, Total | 1,012 | 1,320
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 | 2,411
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 29
Securities available for sale, 12 months or longer, Fair Value | 7,370 | 7,655
Securities available for sale, 12 months or longer, Unrealized Losses | 2,192 | 2,703
Securities available for sale, Fair Value, Total | 7,370 | 10,066
Securities available for sale, Unrealized Losses, Total | 2,192 | 2,732
Collateralized Mortgage Obligations [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 | 0 | 64,493
Securities available for sale, Less than 12 months, Unrealized Losses | 0 | 404
Securities available for sale, 12 months or longer, Fair Value | 0 |
Securities available for sale, 12 months or longer, Unrealized Losses | 0 |
Securities available for sale, Fair Value, Total | 0 | 64,493
Securities available for sale, Unrealized Losses, Total | $ 0 | $ 404

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