Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Less than 12 months, Fair Value	$ 64,697	$ 8
Securities available for sale, Less than 12 months, Unrealized Losses	1	0
Securities available for sale, 12 months or longer, Fair Value	809,521	835,522
Securities available for sale, 12 months or longer, Unrealized Losses	160,845	151,546
Securities available for sale, Fair Value, Total	874,218	835,530
Securities available for sale, Unrealized Losses, Total	160,846	151,546
Total AFS debt securities with unrealized losses, Less than 12 months, Fair Value	64,697	8
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses	1	0
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value	809,521	835,522
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses	160,845	151,546
Total AFS debt securities with unrealized losses, Fair Value	874,218	835,530
Total AFS debt securities with unrealized losses, Unrealized Losses	160,846	151,546
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	21,752	21,811
Securities available for sale, 12 months or longer, Unrealized Losses	2,783	2,724
Securities available for sale, Fair Value, Total	21,752	21,811
Securities available for sale, Unrealized Losses, Total	2,783	2,724
U.S. Treasury Bills [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	64,697
Securities available for sale, Less than 12 months, Unrealized Losses	1
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	64,697
Securities available for sale, Unrealized Losses, Total	1
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	0	8
Securities available for sale, Less than 12 months, Unrealized Losses	0	0
Securities available for sale, 12 months or longer, Fair Value	787,769	813,711
Securities available for sale, 12 months or longer, Unrealized Losses	158,062	148,822
Securities available for sale, Fair Value, Total	787,769	813,719
Securities available for sale, Unrealized Losses, Total	158,062	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	375,415	388,191
Securities available for sale, 12 months or longer, Unrealized Losses	65,445	61,219
Securities available for sale, Fair Value, Total	375,415	388,199
Securities available for sale, Unrealized Losses, Total	65,445	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	303,577	314,854
Securities available for sale, 12 months or longer, Unrealized Losses	64,018	59,665
Securities available for sale, Fair Value, Total	303,577	314,854
Securities available for sale, Unrealized Losses, Total	64,018	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	0	0
Securities available for sale, Less than 12 months, Unrealized Losses	0	0
Securities available for sale, 12 months or longer, Fair Value	85,257	86,475
Securities available for sale, 12 months or longer, Unrealized Losses	22,057	21,409
Securities available for sale, Fair Value, Total	85,257	86,475
Securities available for sale, Unrealized Losses, Total	22,057	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	8,336	8,611
Securities available for sale, 12 months or longer, Unrealized Losses	2,313	2,343
Securities available for sale, Fair Value, Total	8,336	8,611
Securities available for sale, Unrealized Losses, Total	2,313	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	15,184	15,580
Securities available for sale, 12 months or longer, Unrealized Losses	4,229	4,186
Securities available for sale, Fair Value, Total	15,184	15,580
Securities available for sale, Unrealized Losses, Total	4,229	$ 4,186
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
Securities available for sale, Less than 12 months, Unrealized Losses	0
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
Securities available for sale, Unrealized Losses, Total	$ 0

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