Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Less than 12 months, Fair Value	$ 9,112	$ 193,800
Securities available for sale, Less than 12 months, Unrealized Losses	520	17,922
Securities available for sale, 12 months or longer, Fair Value	935,964	760,210
Securities available for sale, 12 months or longer, Unrealized Losses	158,232	155,102
Securities available for sale, Fair Value, Total	945,076	954,010
Securities available for sale, Unrealized Losses, Total	158,752	173,024
Total AFS debt securities with unrealized losses, Less than 12 months, Fair Value	9,112	193,800
Total AFS debt securities with unrealized losses, Less than 12 months, Unrealized Losses	520	17,922
Total AFS debt securities with unrealized losses, 12 months or longer, Fair Value	935,964	760,210
Total AFS debt securities with unrealized losses, 12 months or longer, Unrealized Losses	158,232	155,102
Total AFS debt securities with unrealized losses, Fair Value	945,076	954,010
Total AFS debt securities with unrealized losses, Unrealized Losses	158,752	173,024
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	21,658	21,115
Securities available for sale, 12 months or longer, Unrealized Losses	2,877	3,420
Securities available for sale, Fair Value, Total	21,658	21,115
Securities available for sale, Unrealized Losses, Total	2,877	3,420
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	1,000
Securities available for sale, Less than 12 months, Unrealized Losses	0	94
Securities available for sale, 12 months or longer, Fair Value	9,612	8,572
Securities available for sale, 12 months or longer, Unrealized Losses	2,326	2,509
Securities available for sale, Fair Value, Total	9,612	9,572
Securities available for sale, Unrealized Losses, Total	2,326	2,603
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	17,079	17,356
Securities available for sale, 12 months or longer, Unrealized Losses	4,064	4,163
Securities available for sale, Fair Value, Total	17,079	17,356
Securities available for sale, Unrealized Losses, Total	4,064	4,163
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	9,112	193,800
Securities available for sale, Less than 12 months, Unrealized Losses	520	17,922
Securities available for sale, 12 months or longer, Fair Value	914,306	739,095
Securities available for sale, 12 months or longer, Unrealized Losses	155,355	151,682
Securities available for sale, Fair Value, Total	923,418	932,895
Securities available for sale, Unrealized Losses, Total	155,875	169,604
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	276	154,006
Securities available for sale, Less than 12 months, Unrealized Losses	3	14,708
Securities available for sale, 12 months or longer, Fair Value	467,128	315,598
Securities available for sale, 12 months or longer, Unrealized Losses	68,814	61,485
Securities available for sale, Fair Value, Total	467,404	469,604
Securities available for sale, Unrealized Losses, Total	68,817	76,193
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	8,698	28,493
Securities available for sale, Less than 12 months, Unrealized Losses	514	2,199
Securities available for sale, 12 months or longer, Fair Value	327,416	313,728
Securities available for sale, 12 months or longer, Unrealized Losses	61,859	66,409
Securities available for sale, Fair Value, Total	336,114	342,221
Securities available for sale, Unrealized Losses, Total	62,373	68,608
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	138	10,301
Securities available for sale, Less than 12 months, Unrealized Losses	3	921
Securities available for sale, 12 months or longer, Fair Value	93,071	83,841
Securities available for sale, 12 months or longer, Unrealized Losses	18,292	17,116
Securities available for sale, Fair Value, Total	93,209	94,142
Securities available for sale, Unrealized Losses, Total	$ 18,295	$ 18,037

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Amount of accumulated pre-tax unrealized loss on securities.

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