Securities (Schedule of Available-for-sale, Unrealized Loss on Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 457,028	$ 282,342
Less than 12 Months, Gross Unrealized Losses	$ (20,419)	$ (1,772)
Less than 12 Months, Number of Securities	122	51
12 Months or Greater, Fair Value	$ 9,631	$ 8,812
12 Months or Greater, Gross Unrealized Losses	$ (268)	$ (131)
12 Months or Greater, Number of Securities	9	8
Total, Fair Value	$ 466,659	$ 291,154
Total, Gross Unrealized Losses	$ (20,687)	$ (1,903)
Total, Number of Securities	131	59
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 229,913	$ 99,959
Less than 12 Months, Gross Unrealized Losses	$ (9,143)	$ (518)
Less than 12 Months, Number of Securities	19	11
Total, Fair Value	$ 229,913	$ 99,959
Total, Gross Unrealized Losses	$ (9,143)	$ (518)
Total, Number of Securities	19	11
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		$ 14,156
Less than 12 Months, Gross Unrealized Losses		$ (168)
Less than 12 Months, Number of Securities		2
12 Months or Greater, Fair Value	$ 506	$ 579
12 Months or Greater, Gross Unrealized Losses	$ (6)	$ (5)
12 Months or Greater, Number of Securities	2	2
Total, Fair Value	$ 506	$ 14,735
Total, Gross Unrealized Losses	$ (6)	$ (173)
Total, Number of Securities	2	4
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 9,885	$ 2,519
Less than 12 Months, Gross Unrealized Losses	$ (144)	$ (2)
Less than 12 Months, Number of Securities	17	1
Total, Fair Value	$ 9,885	$ 2,519
Total, Gross Unrealized Losses	$ (144)	$ (2)
Total, Number of Securities	17	1
Other Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 16,086	$ 5,983
Less than 12 Months, Gross Unrealized Losses	$ (505)	$ (82)
Less than 12 Months, Number of Securities	16	6
12 Months or Greater, Fair Value	$ 1,424
12 Months or Greater, Gross Unrealized Losses	$ (76)
12 Months or Greater, Number of Securities	1
Total, Fair Value	$ 17,510	$ 5,983
Total, Gross Unrealized Losses	$ (581)	$ (82)
Total, Number of Securities	17	6
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 201,144	$ 159,725
Less than 12 Months, Gross Unrealized Losses	$ (10,627)	$ (1,002)
Less than 12 Months, Number of Securities	70	31
12 Months or Greater, Fair Value	$ 7,701	$ 8,233
12 Months or Greater, Gross Unrealized Losses	$ (186)	$ (126)
12 Months or Greater, Number of Securities	6	6
Total, Fair Value	$ 208,845	$ 167,958
Total, Gross Unrealized Losses	$ (10,813)	$ (1,128)
Total, Number of Securities	76	37