Discontinued Operations (Schedule Of Discontinued Operations Balance Sheet) (Details) - Discontinued Operations, Disposed of by Sale [Member] - UK Subsidiary [Member] $ in Thousands	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other current assets	$ 80
Other accrued liabilities	77
Net assets	$ 3