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Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Less than 12 months, Fair Value	$ 472,722	$ 29,087
Securities available for sale, Less than 12 months, Unrealized Losses	6,043	68
Securities available for sale, 12 months or longer, Fair Value	3,637	8
Securities available for sale, 12 months or longer, Unrealized Losses	64
Securities available for sale, Fair Value, Total	476,359	29,095
Securities available for sale, Unrealized Losses, Total	6,107	68
Total Securities, Less than 12 months, Fair Value	472,722	29,087
Total Securities, Less than 12 months, Unrealized Losses	6,043	68
Total Securities, 12 months or longer, Fair Value	3,637	8
Total Securities, 12 months or longer, Unrealized Losses	64
Total Securities, Fair Value	476,359	29,095
Total Securities, Unrealized Losses	6,107	68
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	8,855
Securities available for sale, Less than 12 months, Unrealized Losses	79
Securities available for sale, 12 months or longer, Fair Value		8
Securities available for sale, Fair Value, Total	8,855	8
Securities available for sale, Unrealized Losses, Total	79
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	6,700
Securities available for sale, Less than 12 months, Unrealized Losses	47
Securities available for sale, Fair Value, Total	6,700
Securities available for sale, Unrealized Losses, Total	47
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	472,722	29,087
Securities available for sale, Less than 12 months, Unrealized Losses	6,043	68
Securities available for sale, 12 months or longer, Fair Value	3,637	8
Securities available for sale, 12 months or longer, Unrealized Losses	64
Securities available for sale, Fair Value, Total	476,359	29,095
Securities available for sale, Unrealized Losses, Total	6,107	68
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	212,724	18,155
Securities available for sale, Less than 12 months, Unrealized Losses	2,400	44
Securities available for sale, 12 months or longer, Fair Value	72
Securities available for sale, Fair Value, Total	212,796	18,155
Securities available for sale, Unrealized Losses, Total	2,400	44
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	211,699	10,932
Securities available for sale, Less than 12 months, Unrealized Losses	3,293	24
Securities available for sale, 12 months or longer, Fair Value	3,565
Securities available for sale, 12 months or longer, Unrealized Losses	64
Securities available for sale, Fair Value, Total	215,264	10,932
Securities available for sale, Unrealized Losses, Total	3,357	$ 24
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	32,744
Securities available for sale, Less than 12 months, Unrealized Losses	224
Securities available for sale, Fair Value, Total	32,744
Securities available for sale, Unrealized Losses, Total	$ 224

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