Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

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

Stock-Based Non-Cash Compensation Expenses

Stock-based non-cash compensation expenses related to stock options, restricted stock grants and the employee stock purchase plan were recorded in the financial statements as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
	(unaudited)				(unaudited)
Cost of revenues	$	3	$	2	$	9	$	10
Selling and marketing		84		63		242		201
Research and development		153		160		473		491
General and administrative		287		307		903		1,120
Restructuring expense		—		—		—		1,273
Total non-cash stock compensation expense	$	527	$	532	$	1,627	$	3,095