Stock-Based Compensation

3 Months Ended

Mar. 31, 2016

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

STOCK-BASED COMPENSATION

We classify our stock-based compensation expense (inclusive of our incentive stock plan, employee stock purchase plan, and 401(k) contribution matching program) in the accompanying Condensed Consolidated Statements of Operations, based on the department to which the recipient belongs. Stock-based compensation expense included within “Total operating costs and expenses” for the three months ended March 31, 2016 and 2015 was as follows:



	Three Months Ended March 31,
	2016		2015
Cost of product sales	$	27	$	—
Research and development	381		433
Selling, general and administrative	2,769		2,029
Total stock-based compensation	$	3,177	$	2,462