Income Taxes (Summary Of A Reconciliation Of The Beginning And Ending Amount Of Gross Unrecognized Tax Benefits ("UTB")) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross UTB balance at beginning of year	$ 1,789	$ 1,761
Additions based on tax positions related to the current year	231	137
Additions for tax positions of prior years	1	60
Reductions for tax positions of prior years	(39)	(169)
Gross UTB balance at end of year	1,982	1,789
Net UTB balance at end of year	$ 214	$ 197