Summary Of Significant Accounting Policies (Schedule Of Warranty) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Beginning Balance	$ 434	$ 564
Amounts charged to expense	231	(14)
Actual warranty costs paid	(111)	(116)
Ending balance	$ 554	$ 434