Securities (Schedule of Available-for-sale, Unrealized Loss on Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 83,088	$ 285,468
Less than 12 Months, Gross Unrealized Losses	$ (2,229)	$ (19,074)
Less than 12 Months, Number of Securities	63	136
12 Months or Greater, Fair Value	$ 411,893	$ 191,339
12 Months or Greater, Gross Unrealized Losses	$ (36,730)	$ (26,272)
12 Months or Greater, Number of Securities	124	47
Total, Fair Value	$ 494,981	$ 476,807
Total, Gross Unrealized Losses	$ (38,959)	$ (45,346)
Total, Number of Securities	187	183
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 3,955	$ 134,414
Less than 12 Months, Gross Unrealized Losses	$ (34)	$ (7,610)
Less than 12 Months, Number of Securities	1	9
12 Months or Greater, Fair Value	$ 222,553	$ 89,239
12 Months or Greater, Gross Unrealized Losses	$ (14,462)	$ (10,243)
12 Months or Greater, Number of Securities	19	11
Total, Fair Value	$ 226,508	$ 223,653
Total, Gross Unrealized Losses	$ (14,496)	$ (17,853)
Total, Number of Securities	20	20
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 8,225	$ 1,266
Less than 12 Months, Gross Unrealized Losses	$ (24)	$ (14)
Less than 12 Months, Number of Securities	3	1
12 Months or Greater, Fair Value	$ 286	$ 309
12 Months or Greater, Gross Unrealized Losses	$ (4)	$ (4)
12 Months or Greater, Number of Securities	2	2
Total, Fair Value	$ 8,511	$ 1,575
Total, Gross Unrealized Losses	$ (28)	$ (18)
Total, Number of Securities	5	3
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 5,455	$ 13,146
Less than 12 Months, Gross Unrealized Losses	$ (96)	$ (616)
Less than 12 Months, Number of Securities	6	20
12 Months or Greater, Fair Value	$ 8,086
12 Months or Greater, Gross Unrealized Losses	$ (316)
12 Months or Greater, Number of Securities	15
Total, Fair Value	$ 13,541	$ 13,146
Total, Gross Unrealized Losses	$ (412)	$ (616)
Total, Number of Securities	21	20
Other Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 13,895	$ 25,044
Less than 12 Months, Gross Unrealized Losses	$ (989)	$ (1,866)
Less than 12 Months, Number of Securities	9	20
12 Months or Greater, Fair Value	$ 16,660	$ 5,506
12 Months or Greater, Gross Unrealized Losses	$ (1,407)	$ (542)
12 Months or Greater, Number of Securities	17	6
Total, Fair Value	$ 30,555	$ 30,550
Total, Gross Unrealized Losses	$ (2,396)	$ (2,408)
Total, Number of Securities	26	26
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 51,558	$ 111,598
Less than 12 Months, Gross Unrealized Losses	$ (1,086)	$ (8,968)
Less than 12 Months, Number of Securities	44	86
12 Months or Greater, Fair Value	$ 164,308	$ 96,285
12 Months or Greater, Gross Unrealized Losses	$ (20,541)	$ (15,483)
12 Months or Greater, Number of Securities	71	28
Total, Fair Value	$ 215,866	$ 207,883
Total, Gross Unrealized Losses	$ (21,627)	$ (24,451)
Total, Number of Securities	115	114