Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Less than 12 months, Fair Value	$ 803,267	$ 773,484
Securities available for sale, Less than 12 months, Unrealized Losses	51,729	10,039
Securities available for sale, 12 months or longer, Fair Value	296,908	172,180
Securities available for sale, 12 months or longer, Unrealized Losses	30,137	4,727
Securities available for sale, Fair Value, Total	1,100,175	945,664
Securities available for sale, Unrealized Losses, Total	81,866	14,766
Total Securities, Less than 12 months, Fair Value	803,267	773,484
Total Securities, Less than 12 months, Unrealized Losses	51,729	10,039
Total Securities, 12 months or longer, Fair Value	296,908	172,180
Total Securities, 12 months or longer, Unrealized Losses	30,137	4,727
Total Securities, Fair Value	1,100,175	945,664
Total Securities, Unrealized Losses	81,866	14,766
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	23,019	9,438
Securities available for sale, Less than 12 months, Unrealized Losses	1,516	97
Securities available for sale, Fair Value, Total	23,019	9,438
Securities available for sale, Unrealized Losses, Total	1,516	97
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	6,968	13,364
Securities available for sale, Less than 12 months, Unrealized Losses	538	433
Securities available for sale, 12 months or longer, Fair Value	5,835	0
Securities available for sale, 12 months or longer, Unrealized Losses	727
Securities available for sale, Fair Value, Total	12,803	13,364
Securities available for sale, Unrealized Losses, Total	1,265	433
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	21,763	24,780
Securities available for sale, Less than 12 months, Unrealized Losses	1,959	477
Securities available for sale, Fair Value, Total	21,763	24,780
Securities available for sale, Unrealized Losses, Total	1,959	477
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	780,248	764,046
Securities available for sale, Less than 12 months, Unrealized Losses	50,213	9,942
Securities available for sale, 12 months or longer, Fair Value	296,908	172,180
Securities available for sale, 12 months or longer, Unrealized Losses	30,137	4,727
Securities available for sale, Fair Value, Total	1,077,156	936,226
Securities available for sale, Unrealized Losses, Total	80,350	14,669
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	434,253	333,489
Securities available for sale, Less than 12 months, Unrealized Losses	24,072	3,597
Securities available for sale, 12 months or longer, Fair Value	107,806	61,249
Securities available for sale, 12 months or longer, Unrealized Losses	11,228	1,645
Securities available for sale, Fair Value, Total	542,059	394,738
Securities available for sale, Unrealized Losses, Total	35,300	5,242
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	232,939	283,965
Securities available for sale, Less than 12 months, Unrealized Losses	18,040	3,353
Securities available for sale, 12 months or longer, Fair Value	156,206	110,931
Securities available for sale, 12 months or longer, Unrealized Losses	16,170	3,082
Securities available for sale, Fair Value, Total	389,145	394,896
Securities available for sale, Unrealized Losses, Total	34,210	6,435
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	84,325	108,448
Securities available for sale, Less than 12 months, Unrealized Losses	5,604	2,082
Securities available for sale, 12 months or longer, Fair Value	27,061
Securities available for sale, 12 months or longer, Unrealized Losses	2,012
Securities available for sale, Fair Value, Total	111,386	108,448
Securities available for sale, Unrealized Losses, Total	$ 7,616	$ 2,082

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Amount of accumulated pre-tax unrealized loss on securities.

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