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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,059	$ 2,044	$ (24)	$ 1,051
Other comprehensive income before reclassifications	(338)	(111)	1,354	1,479
Reclassification adjustments	(26)	(8)	(77)	(94)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	9	3	26	32
Tax effect of current period changes	124	40	(434)	(471)
Total other comprehensive (loss) income	(240)	(79)	843	914
Ending balance	819	1,965	819	1,965
Unrealized Gains And Losses On Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,020	2,005	(63)	1,012
Other comprehensive income before reclassifications	(338)	(111)	1,354	1,479
Reclassification adjustments	(26)	(8)	(77)	(94)
Tax effect of current period changes	124	40	(434)	(471)
Total other comprehensive (loss) income	(240)	(79)	843	914
Ending balance	780	1,926	780	1,926
Change In Benefit Obligations And Plan Assets For The Post Retirement Benefit Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	39	39	39	39
Ending balance	$ 39	$ 39	$ 39	$ 39

Other Comprehensive Income (Loss), Tax Effect Of Current Period Changes

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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