Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Abstract]
Computed "Expected" Federal Tax Expense	$ 15	$ 96
State Income Taxes, net of Federal Benefit	1	1
R&D Credits	0	(99)
Permanent Differences	2	4
Other	(46)	47
Total Federal and State Income Taxes	(28)	49
Accrued interest or penalties related to uncertain tax positions	$ 0	$ 0