Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	Jan. 01, 2019 USD ($)
Accounting Standards Update 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase in total assets and liabilities due to recording of operating lease right-of-use assets and operating lease liabilities	$ 0.1

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant