SHARE-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2016

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

Schedule of Share-based Compensation, Stock Options, Activity

The stock option activity for all of the Company’s equity compensation plans noted above is summarized as follows:

Stock Options	Number of Shares Under Option		Weighted- Average Exercise Price per Share
Outstanding at December 31, 2015	2,405,371		$	21.39
Options granted	426,390		$	13.10
Options exercised	(351,574	)	$	20.95
Options forfeited	—		$	—
Outstanding at March 31, 2016	2,480,187		$	23.50
Options exercisable at March 31, 2016	1,376,812		$	16.35

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the non-vested restricted stock awards is as follows:

Restricted Stock Awards	Number of Restricted Stock Awards		Weighted- Average Grant Date Fair Value
Non-vested at December 31, 2015	2,146,498		$	33.20
Granted	186,264		$	33.42
Vested	(72,690	)	$	35.67
Forfeited	(106,989	)	$	32.49
Non-vested at March 31, 2016	2,153,083		$	33.17

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The amount of share-based compensation expense recognized by the Company is as follows (in thousands):

	Three Months Ended March 31,
	2016		2015
Manufacturing expenses	$	1,368	$	1,046
Research and development	1,340		1,365
Selling, general and administrative	4,570		4,077
Total	$	7,278	$	6,488