Domestic And Foreign Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Domestic And Foreign Income Taxes [Abstract]
Net operating loss carry forwards	$ 8,486	$ 7,749
Inventory	548	509
Compensation accruals	1,161	960
Accruals and reserves	92	109
Credits	235	308
Contract assets	1,573	1,489
Other	134	175
Total Deferred tax assets	12,229	11,299
Less: valuation allowance	(11,395)	(10,605)
Deferred tax assets net of valuation allowance	834	694
Depreciation and amortization	(844)	(689)
Intangible intangibles	(1,008)
Total deferred tax liabilities	(1,852)	(689)
Net deferred tax		$ 5
Net deferred tax	$ (1,018)