Prepaid Expenses (Schedule Of Prepaid Expenses) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Prepaid Expenses [Abstract]
Prepaid services	$ 290	$ 523
Prepaid insurance	40	16
Prepaid licenses, software tools and support	33	23
Other prepaid expenses	7	12
Prepaid expenses	$ 370	$ 574