Stock-Based Compensation (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
	(unaudited)				(unaudited)
Cost of revenues	$	3	$	3	$	6	$	8
Selling and marketing		83		62		158		138
Research and development		151		162		320		331
General and administrative		286		346		615		813
Restructuring expense		—		1,273		—		1,273
Total non-cash stock compensation expense	$	523	$	1,846	$	1,099	$	2,563