Change in Accumulated Other Comprehensive Income (Narrative) (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]
Debt and Equity Securities, Gain (Loss)	$ (4)	$ 6	$ (7)	$ 17
Reclassification adjustments	4	(6)	7	(17)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	1	1	2	4
Unrealized Gains And Losses On Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt and Equity Securities, Gain (Loss)			(7)	17
Reclassification adjustments	$ 4	$ (6)	$ 7	$ (17)

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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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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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