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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 | Mar. 31, 2023 | Dec. 31, 2022
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Debt Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Less than 12 Months, Fair Value | $ 76,160 | $ 203,095
Less than 12 Months, Unrealized Losses | (2,723) | (23,567)
12 Months or More, Fair Value | 340,095 | 212,027
12 Months or More, Unrealized Losses | (61,253) | (49,764)
Total, Fair Value | 416,255 | 415,122
Total, Unrealized Losses | (63,976) | (73,331)
U.S. Treasury Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Less than 12 Months, Fair Value | 23,162 | 25,733
Less than 12 Months, Unrealized Losses | (449) | (849)
12 Months or More, Fair Value | 19,270 | 16,121
12 Months or More, Unrealized Losses | (2,225) | (2,363)
Total, Fair Value | 42,432 | 41,854
Total, Unrealized Losses | (2,674) | (3,212)
U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Less than 12 Months, Fair Value | 4,805 | 8,321
Less than 12 Months, Unrealized Losses | (91) | (885)
12 Months or More, Fair Value | 13,835 | 10,002
12 Months or More, Unrealized Losses | (2,565) | (2,058)
Total, Fair Value | 18,640 | 18,323
Total, Unrealized Losses | (2,656) | (2,943)
States And Political Subdivisions [Member] |  |
Schedule of Investments [Line Items] |  |
Less than 12 Months, Fair Value | 16,673 | 66,680
Less than 12 Months, Unrealized Losses | (508) | (11,194)
12 Months or More, Fair Value | 110,786 | 57,367
12 Months or More, Unrealized Losses | (23,942) | (18,480)
Total, Fair Value | 127,459 | 124,047
Total, Unrealized Losses | (24,450) | (29,674)
Mortgage-backed Securities-Government Sponsored Entities [Member] |  |
Schedule of Investments [Line Items] |  |
Less than 12 Months, Fair Value | 31,520 | 102,361
Less than 12 Months, Unrealized Losses | (1,675) | (10,639)
12 Months or More, Fair Value | 196,204 | 128,537
12 Months or More, Unrealized Losses | (32,521) | (26,863)
Total, Fair Value | 227,724 | 230,898
Total, Unrealized Losses | $ (34,196) | $ (37,502)

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