Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($)
Description Of Business And Segment Reporting [Abstract]
Prior period immaterial error amount	$ 440

The disclosure of the nature of an entity's business and the reporting segments.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
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