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Accumulated Other Comprehensive Loss (Schedule of Reclassifications From Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net gains/(losses) - other | $ 14 | $ 34
Tax (expense) benefit | (877) | (648)
Net income | 3,151 | 2,506
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net income | (240) | (261)
Investment securities- with OTTI [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Interest income (expense) on investment securities: taxable | 49 | 55
Tax (expense) benefit | (13) | (15)
Net income | 36 | 40
Investment Securities -All Other AFS [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Net gains/(losses) - other | (6) | (9)
Tax (expense) benefit | 2 | 2
Net income | (4) | (7)
Investment Securities HTM [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Interest income (expense) on investment securities: taxable | (75) | (76)
Tax (expense) benefit | 20 | 31
Net income | (55) | (45)
Pension Plan [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Tax (expense) benefit | 73 | 82
Net income | (196) | (220)
Pension Plan [Member] | Amortization of unrecognized loss [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Salaries and employee benefits | (269) | (300)
Pension Plan [Member] | Amortization of prior service costs [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Salaries and employee benefits | 0 | (2)
SERP [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Tax (expense) benefit | 7 | 11
Net income | (21) | (29)
SERP [Member] | Amortization of unrecognized loss [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Salaries and employee benefits | (29) | (41)
SERP [Member] | Amortization of prior service costs [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Salaries and employee benefits | $ 1 | $ 1

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