Securities (Schedule of Held-to-maturity, Unrealized Loss on Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Held-to-maturity:
Less than 12 Months, Fair Value	$ 245,256	$ 26,074
Less than 12 Months, Gross Unrealized Losses	$ (17,342)	$ (106)
Less than 12 Months, Number of Securities	50	14
12 Months or Greater, Fair Value	$ 22,622
12 Months or Greater, Gross Unrealized Losses	$ (3,343)
12 Months or Greater, Number of Securities	7
Total, Fair Value	$ 267,878	$ 26,074
Total, Gross Unrealized Losses	$ (20,685)	$ (106)
Total, Number of Securities	57	14
US Treasury Securities [Member]
Held-to-maturity:
Less than 12 Months, Fair Value	$ 146,919
Less than 12 Months, Gross Unrealized Losses	$ (3,694)
Less than 12 Months, Number of Securities	4
Total, Fair Value	$ 146,919
Total, Gross Unrealized Losses	$ (3,694)
Total, Number of Securities	4
US Government-sponsored Enterprises Debt Securities [Member]
Held-to-maturity:
Less than 12 Months, Fair Value	$ 22,393	$ 21,901
Less than 12 Months, Gross Unrealized Losses	$ (2,777)	$ (87)
Less than 12 Months, Number of Securities	6	8
12 Months or Greater, Fair Value	$ 22,622
12 Months or Greater, Gross Unrealized Losses	$ (3,343)
12 Months or Greater, Number of Securities	7
Total, Fair Value	$ 45,015	$ 21,901
Total, Gross Unrealized Losses	$ (6,120)	$ (87)
Total, Number of Securities	13	8
Municipal securities [Member]
Held-to-maturity:
Less than 12 Months, Fair Value	$ 46,482	$ 4,173
Less than 12 Months, Gross Unrealized Losses	$ (7,684)	$ (19)
Less than 12 Months, Number of Securities	35	6
Total, Fair Value	$ 46,482	$ 4,173
Total, Gross Unrealized Losses	$ (7,684)	$ (19)
Total, Number of Securities	35	6
Mortgage-backed securities (GSEs) [Member]
Held-to-maturity:
Less than 12 Months, Fair Value	$ 29,462
Less than 12 Months, Gross Unrealized Losses	$ (3,187)
Less than 12 Months, Number of Securities	5
Total, Fair Value	$ 29,462
Total, Gross Unrealized Losses	$ (3,187)
Total, Number of Securities	5