Change in Accumulated Other Comprehensive Income (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt and Equity Securities, Gain (Loss)	$ 0	$ 0	$ (3)	$ 11
Reclassification adjustments	0	0	3	(11)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax			1	2
Unrealized Gains And Losses On Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt and Equity Securities, Gain (Loss)			(3)	11
Reclassification adjustments	$ 0	$ 0	$ 3	$ (11)

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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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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