Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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,
	2014		2013		2014		2013
	(unaudited)				(unaudited)
Cost of revenues	$	2	$	6	$	10	$	17
Selling and marketing		63		138		201		698
Research and development		160		205		491		622
General and administrative		307		472		1,120		1,410
Restructuring expense		—		—		1,273		—
Total non-cash stock compensation expense	$	532	$	821	$	3,095	$	2,747