Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

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

Stock-Based Non-Cash Compensation Expenses

Stock-based non-cash compensation expense 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,
	2016		2015		2016		2015
	(unaudited)				(unaudited)
Cost of revenues	$	—	$	3	$	3	$	9
Selling and marketing		84		84		238		242
Research and development		128		153		375		473
General and administrative		196		287		557		903
Total non-cash stock compensation expense	$	408	$	527	$	1,173	$	1,627