Share-Based Compensation (Schedule Of Stock-Based Compensation Expense By Statement Of Operations) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based employee compensation expense	$ 294,000	$ 211,000	$ 718,000	$ 717,000
Cost of product revenue
Share-based employee compensation expense	7,000	0	15,000	0
Cost of contract revenue
Share-based employee compensation expense	0	27,000	0	27,000
Research and development expense
Share-based employee compensation expense	82,000		198,000
Research and development expense | Adjustment
Share-based employee compensation expense		36,000		23,000
Sales, marketing, general and administrative expense
Share-based employee compensation expense	$ 205,000	$ 148,000	$ 505,000	$ 667,000