Securities (Schedule of Available-for-sale, Unrealized Loss on Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 60,234	$ 285,468
Less than 12 Months, Gross Unrealized Losses	$ (1,243)	$ (19,074)
Less than 12 Months, Number of Securities	31	136
12 Months or Greater, Fair Value	$ 284,321	$ 191,339
12 Months or Greater, Gross Unrealized Losses	$ (43,956)	$ (26,272)
12 Months or Greater, Number of Securities	143	47
Total, Fair Value	$ 344,555	$ 476,807
Total, Gross Unrealized Losses	$ (45,199)	$ (45,346)
Total, Number of Securities	174	183
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		$ 134,414
Less than 12 Months, Gross Unrealized Losses		$ (7,610)
Less than 12 Months, Number of Securities		9
12 Months or Greater, Fair Value	$ 73,733	$ 89,239
12 Months or Greater, Gross Unrealized Losses	$ (10,817)	$ (10,243)
12 Months or Greater, Number of Securities	9	11
Total, Fair Value	$ 73,733	$ 223,653
Total, Gross Unrealized Losses	$ (10,817)	$ (17,853)
Total, Number of Securities	9	20
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 20,181	$ 1,266
Less than 12 Months, Gross Unrealized Losses	$ (143)	$ (14)
Less than 12 Months, Number of Securities	4	1
12 Months or Greater, Fair Value	$ 1,488	$ 309
12 Months or Greater, Gross Unrealized Losses	$ (17)	$ (4)
12 Months or Greater, Number of Securities	3	2
Total, Fair Value	$ 21,669	$ 1,575
Total, Gross Unrealized Losses	$ (160)	$ (18)
Total, Number of Securities	7	3
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 7,729	$ 13,146
Less than 12 Months, Gross Unrealized Losses	$ (283)	$ (616)
Less than 12 Months, Number of Securities	10	20
12 Months or Greater, Fair Value	$ 9,475
12 Months or Greater, Gross Unrealized Losses	$ (875)
12 Months or Greater, Number of Securities	17
Total, Fair Value	$ 17,204	$ 13,146
Total, Gross Unrealized Losses	$ (1,158)	$ (616)
Total, Number of Securities	27	20
Other Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 2,654	$ 25,044
Less than 12 Months, Gross Unrealized Losses	$ (270)	$ (1,866)
Less than 12 Months, Number of Securities	2	20
12 Months or Greater, Fair Value	$ 26,980	$ 5,506
12 Months or Greater, Gross Unrealized Losses	$ (3,955)	$ (542)
12 Months or Greater, Number of Securities	25	6
Total, Fair Value	$ 29,634	$ 30,550
Total, Gross Unrealized Losses	$ (4,225)	$ (2,408)
Total, Number of Securities	27	26
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 29,670	$ 111,598
Less than 12 Months, Gross Unrealized Losses	$ (547)	$ (8,968)
Less than 12 Months, Number of Securities	15	86
12 Months or Greater, Fair Value	$ 172,645	$ 96,285
12 Months or Greater, Gross Unrealized Losses	$ (28,292)	$ (15,483)
12 Months or Greater, Number of Securities	89	28
Total, Fair Value	$ 202,315	$ 207,883
Total, Gross Unrealized Losses	$ (28,839)	$ (24,451)
Total, Number of Securities	104	114