Income Taxes (Schedule Of Net Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Vacation Accrual	$ 29	$ 24
Allowance for Doubtful Accounts	2	2
Stock Compensation	94	93
Bonus	0	2
Depreciation and Amortization	94	50
Inventory Obsolescence	1	4
R&D Credit Carryforward	235	171
Valuation allowance	(186)	(121)
Total Deferred Tax Assets	269	225
Prepaid Expenses	23	22
Total Deferred Tax Liabilities	23	22
Net Deferred Tax Asset	$ 246	$ 203

Amount of deferred tax liability attributable to taxable temporary differences.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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