Change in Accumulated Other Comprehensive Income (Changes To Accumulated Other Comprehensive Income By Components) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,441	$ (2,633)	$ (1,553)	$ 310
Other comprehensive income (loss) before reclassifications	267	(1,495)	4,054	(5,209)
Reclassification adjustments	4	(6)	7	(17)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	1	1	2	4
Tax effect of current period changes	(57)	315	(853)	1,097
Total other comprehensive income (loss)	214	(1,186)	3,208	(4,129)
Ending balance	1,655	(3,819)	1,655	(3,819)
Unrealized Gains And Losses On Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,397	(2,677)	(1,597)	266
Other comprehensive income (loss) before reclassifications	267	(1,495)	4,054	(5,209)
Reclassification adjustments	4	(6)	7	(17)
Tax effect of current period changes	(57)	315	(853)	1,097
Total other comprehensive income (loss)	214	(1,186)	3,208	(4,129)
Ending balance	1,611	(3,863)	1,611	(3,863)
Change In Benefit Obligations And Plan Assets For The Post Retirement Benefit Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	44	44	44	44
Ending balance	$ 44	$ 44	$ 44	$ 44

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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