Share-Based Payments (Tables)

9 Months Ended

Sep. 30, 2016

Share-Based Payments

Schedule of share-based compensation recognized related to the grant of employee and non-employee stock options, SAR, potential Employee Stock Purchase Plan (ESSP) awards and non-vested stock

Share-based compensation recognized related to the grant of employee and non-employee stock options, SAR, potential Employee Stock Purchase Plan (ESPP) awards and non-vested stock was as follows, in thousands:

	Three Months ended September 30,				Nine Months ended September 30,
	2016		2015		2016		2015
	(unaudited)				(unaudited)
Research and development	$	253	$	236	$	882	$	646
Selling, general and administrative	1,230		896		3,572		2,365
Total	$	1,483	$	1,132	$	4,454	$	3,011

Summary of stock option and SAR activity

	Number of  Options		Weighted- Average  Exercise Price		Weighted-Average  Remaining  Contractual  Term (in years)
Outstanding, December 31, 2015	2,699,007		$	8.94	7.92
Granted (unaudited)	1,036,600		13.12
Exercised (unaudited)	(74,882	)	6.24
Forfeited or expired (unaudited)	(26,575	)	12.41
Outstanding, September 30, 2016 (unaudited)	3,634,150		$	10.16	7.82
As of December 31, 2015:
Vested and expected to vest	2,654,381		$	8.93	7.90
Exercisable	901,672		$	7.95	6.86
As of September 30, 2016:
Vested and expected to vest (unaudited)	3,571,887		$	10.13	7.80
Exercisable (unaudited)	1,494,199		$	8.59	6.74