Stock-Based Compensation

9 Months Ended

Sep. 30, 2014

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

Stock-Based Compensation

Note 8 — Stock-Based Compensation

Total stock-based compensation expense was recognized in our Condensed Consolidated Statements of Operations as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Cost of goods sold	$	268	$	327	$	867	$	974
Research and development expense		1,774		2,071		5,579		5,923
General and administrative expense		2,080		2,166		6,201		6,268
Total stock-based compensation	$	4,122	$	4,564	$	12,647	$	13,165

During the three months ended September 30, 2014 and 2013, we granted 632,550 and 449,010 stock options, respectively, at a weighted average grant-date fair value of $5.80 per share and $7.11 per share, respectively.

During the nine months ended September 30, 2014 and 2013, we granted 4,408,590 and 3,438,320 stock options, respectively, at a weighted average grant-date fair value of $5.84 per share and $4.95 per share, respectively.

As a result of stock issuances under our equity compensation plans, during the three months ended September 30, 2014 and 2013, we issued 961,395 and 306,859 common shares, respectively, and during the nine months ended September 30, 2014 and 2013, we issued 1,979,282 and 731,073 common shares, respectively.