Domestic And Foreign Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	[1]
Domestic And Foreign Income Taxes [Abstract]
Net operating loss carry forwards	$ 7,749	$ 8,789
Inventory	509	678
Compensation accruals	960	1,046
Accruals and reserves	109	206
Credits	308	382
Contract assets	1,489	55
Other	175	317
Total Deferred tax assets	11,299	11,473
Less: valuation allowance	(10,605)	(10,165)
Deferred tax assets net of valuation allowance	694	1,308
Deferred tax liabilities depreciation and amortization	(689)	(1,068)
Total deferred tax liabilities	(689)	(1,068)
Net deferred tax	$ 5	$ 240

[1] Historical effective tax rates have been adjusted due to discontinued operations. Please refer to Note 2 for further information.