Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2016

Share-based Compensation Tables

Stock-based employee compensation expense

The following table summarizes the amount of share-based compensation expense by line item in the statements of operations:

Share-based compensation expense		Three Months Ended				Six Months Ended
		June 30,				June 30,
(in thousands)		2016		2015		2016		2015
Cost of product revenue	$	10	$	4	$	20	$	8
Research and development expense		102		68		185		116
Sales, marketing, general and administrative expense		262		162		469		300
	$	374	$	234	$	674	$	424

Options activity and positions

The following table summarizes shares, weighted-average exercise price, weighted-average remaining contractual term and aggregate intrinsic value of options outstanding and options exercisable as of June 30, 2016:

				Weighted-
			Weighted-	Average
			Average	Remaining		Aggregate
			Exercise	Contractual		Intrinsic
Options	Shares		Price	Term (years)		Value
Outstanding as of June 30, 2016	4,039,000	$	4.00	7.8	$	15,000
Exercisable as of June 30, 2016	1,828,000	$	6.07	6.2	$	13,000