Discontinued Operations (Schedule Of Discontinued Operations Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets of discontinued operations	$ 80	$ 1,205
Current liabilities of discontinued operations	77	336
Discontinued Operations, Disposed of by Sale [Member] | UK Subsidiary [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, net		213
Inventories		818
Other current assets	80	174
Current assets of discontinued operations	80	1,205
Machinery and equipment		436
Less: Accumulated depreciation		126
Net machinery and equipment		310
Other assets, net		61
Total assets	80	1,576
Accounts payable		320
Other accrued liabilities	77	16
Current liabilities of discontinued operations	77	336
Net assets	$ 3	$ 1,240