Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation Expense

Stock-based compensation expense for the three and six months ended June 30 was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Cost of revenues	$	54	$	58	$	106	$	119
Selling, general and administrative		237		352		475		760
Research and development		49		78		88		172
Total stock-based compensation	$	340	$	488	$	669	$	1,051