Equity-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Equity-Based Compensation

Schedule of equity-based compensation expense

Equity-based compensation expense, for the three and nine months ended September 30, 2013 and 2012 consisted of the following (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Cost of product sales	$	25	$	52	$	83	$	198
Research and development	337		473		1,634		1,420
Selling, general and administrative	1,303		1,525		4,169		3,694
Total equity-based compensation expense	$	1,665	$	2,050	$	5,886	$	5,312