Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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

Stock-Based Compensation Expense

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Cost of revenues	$	41	$	59	$	141	$	103
Selling, general and administrative		278		348		842		1,529
Research and development		83		84		190		261
Total stock-based compensation	$	402	$	491	$	1,173	$	1,893