Share-Based Payments (Tables)

9 Months Ended

Sep. 30, 2014

Share-Based Payments

Schedule of share-based compensation recognized related to the grant of employee and non-employee stock options, SARS 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,
	2014		2013		2014		2013
	(unaudited)				(unaudited)
Research and development	$	196	$	134	$	559	$	373
Selling, general and administrative	508		357		1,464		887
Total	$	704	$	491	$	2,023	$	1,260

Summary of stock option and SAR activity

					Weighted-
			Weighted-		Average
	Number of		Average		Remaining
	Options and SAR		Exercise Price		Contractual Term
Outstanding, December 31, 2013	1,463,043		$	7.27	8.51
Granted (unaudited)	672,185		$	9.21
Exercised (unaudited)	(14,814	)	$	2.95
Forfeited or expired (unaudited)	(40,620	)	$	7.56
Outstanding, September 30, 2014 (unaudited)	2,079,794		$	7.93	8.28
As of December 31, 2013
Vested and expected to vest	1,425,752		$	7.26	8.50
Exercisable	256,227		$	4.47	6.44
As of September 30, 2014
Vested and expected to vest (unaudited)	2,032,896		$	7.91	8.27
Exercisable (unaudited)	546,672		$	6.55	7.18