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Securities (Schedule of Investments' Gross Unrealized Losses and Fair Value Aggregated by Security Type and Length of Time that Individual Securities have been in a Continuous Unrealized Loss Position) (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Debt Securities [Member]    
Schedule of Investments [Line Items]    
Less than 12 Months, Fair Value $ 3,557 $ 203,095
Less than 12 Months, Unrealized Losses (86) (23,567)
12 Months or More, Fair Value 376,942 212,027
12 Months or More, Unrealized Losses (82,901) (49,764)
Total, Fair Value 380,499 415,122
Total, Unrealized Losses (82,987) (73,331)
U.S. Treasury Securities [Member]    
Schedule of Investments [Line Items]    
Less than 12 Months, Fair Value   25,733
Less than 12 Months, Unrealized Losses   (849)
12 Months or More, Fair Value 39,891 16,121
12 Months or More, Unrealized Losses (3,291) (2,363)
Total, Fair Value 39,891 41,854
Total, Unrealized Losses (3,291) (3,212)
U.S. Government Agencies [Member]    
Schedule of Investments [Line Items]    
Less than 12 Months, Fair Value   8,321
Less than 12 Months, Unrealized Losses   (885)
12 Months or More, Fair Value 18,050 10,002
12 Months or More, Unrealized Losses (3,305) (2,058)
Total, Fair Value 18,050 18,323
Total, Unrealized Losses (3,305) (2,943)
States And Political Subdivisions [Member]    
Schedule of Investments [Line Items]    
Less than 12 Months, Fair Value 3,557 66,680
Less than 12 Months, Unrealized Losses (86) (11,194)
12 Months or More, Fair Value 114,984 57,367
12 Months or More, Unrealized Losses (33,326) (18,480)
Total, Fair Value 118,541 124,047
Total, Unrealized Losses (33,412) (29,674)
Mortgage-backed Securities-Government Sponsored Entities [Member]    
Schedule of Investments [Line Items]    
Less than 12 Months, Fair Value   102,361
Less than 12 Months, Unrealized Losses   (10,639)
12 Months or More, Fair Value 204,017 128,537
12 Months or More, Unrealized Losses (42,979) (26,863)
Total, Fair Value 204,017 230,898
Total, Unrealized Losses $ (42,979) $ (37,502)