Fair Value Of Financial Instruments (Fair Value Of Financial Assets Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
ASSETS
Total assets measured at fair value	$ 13,502	$ 23,675
Cash and money market funds [Member]
ASSETS
Total cash and cash equivalents	13,502	23,675
Level 1 [Member]
ASSETS
Total assets measured at fair value	13,502	23,675
Level 1 [Member] | Cash and money market funds [Member]
ASSETS
Total cash and cash equivalents	$ 13,502	$ 23,675