Other Financial Statement Data Other Financial Statement Data (Schedule Of Accrued Expenses) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Balance Sheet Related Disclosures [Abstract]
Wages and benefits	$ 2,241	$ 1,014
Warranty liability	685	584	$ 635
Other	370	361
Accrued expenses	$ 3,296	$ 1,959