Income Taxes (Schedule Of Net Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets:
Vacation accrual	$ 26	$ 25
Allowance for credit losses	2	2
Stock compensation	6	91
Bonus	2	11
Depreciation and amortization	71	94
Inventory obsolescence	2	2
R&D expenses	273	0
R&D credit carryforward	279	313
Valuation allowance	(279)	(252)
Total Deferred Tax Assets	382	286
Deferred Tax Liabilities:
Prepaid expenses	27	30
Total Deferred Tax Liabilities	27	30
Net Deferred Tax Asset	$ 355	$ 256