Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

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

Assumptions used in the Black-Scholes Option-Pricing Model

The assumptions used in the Black-Scholes option-pricing model for the three months ended March 31, 2016 and 2015 are as follows:

	Three Months Ended March 31,
	2016		2015
Risk free interest rate	1.4%		1.5%
Expected term	6.0 years		5.8 to 6.1 years
Expected volatility	77.8%		78.5%
Expected dividend yield	—	%	—	%

Stock-Based Compensation Expense

The Company recognized stock-based compensation expense in continuing operations as follows (in thousands):

	Three Months Ended March 31,
	2016		2015
Cost of goods sold	$	101	$	93
Research and development	424		224
Selling, general and administrative	963		1,033
Total	$	1,488	$	1,350