Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

Schedule of Stock-Based Compensation by Expense Category

The following table summarizes the components of share-based compensation expense in the consolidated statements of operations for the three and six-month periods ended June 30, 2013 and 2012:

	Three Months Ended June  30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(In thousands)
Research and development	$	288	$	507	$	539	$	758
Selling, general and administrative		768		2,255		1,477		3,222
Total non-cash compensation expense related to share-based compensation included in operating expense	$	1,056	$	2,762	$	2,016	$	3,980

Schedule of Unvested Stock Option Awards

The following table summarizes the activity related to the Company’s restricted stock and RSU’s for the six-month period ended June 30, 2013:

	Number  of Shares			Weighted-Average Grant Date Fair Value Per Share
	(Shares in thousands)
Unvested at December 31, 2012		1,830		$	2.74
Granted		642			0.94
Vested		(866	)		2.39
Forfeited		(194	)		1.58
Unvested at June 30, 2013		1,412		$	2.30

Stock Option

Schedule of Weighted-Average Key Assumptions Used in Determining Fair Value of Stock Option Awards

The weighted-average key assumptions used in determining the fair value of stock options granted for the three and six-month periods ended June 30, 2013 and 2012 were as follows:

	Three Months  Ended June 30,						Six Months  Ended June 30,
	2013			2012			2013			2012
Weighted-average volatility		107.4	%		95	%		106.9	%		94	%
Weighted-average risk-free interest rate		0.9	%		0.8	%		0.8	%		1.0	%
Weighted-average expected life in years		5.0			4.9			4.9			5.4
Dividend yield		0.0	%		0.0	%		0.0	%		0.0	%
Weighted-average grant date fair value per share	$	0.56		$	0.60		$	0.73		$	1.27

Schedule of Stock Option Activity

The following table summarizes the activity related to the Company’s stock options for the six-month period ended June 30, 2013:

	Number  of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in yrs)		Aggregate Intrinsic Value of In-the-Money Options
	(In thousands, except weighted-average data)
Outstanding at December 31, 2012		4,027		$	5.16		7.76	$	208
Granted		1,290			0.95		—		—
Exercised		—			—		—		—
Cancelled		(626	)		3.33		—		—
Outstanding at June 30, 2013	$	4,691		$	4.24		7.83	$	—
Exercisable at June 30, 2013		2,200		$	5.89		6.41	$	—

Stock Options That Contain Performance And Market Based Conditions

Schedule of Stock Option Activity

The following table summarizes the activity related to the Company’s performance options for the six-month period ended June 30, 2013:

	Number  of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in yrs)		Aggregate Intrinsic Value of In-the-Money Options
	(In thousands, except weighted-average data)
Outstanding at December 31, 2012		953		$	3.73		9.30	$	74
Granted		—			—		—		—
Exercised		—			—		—		—
Cancelled		(81	)		5.14		—		—
Outstanding at June 30, 2013		872		$	3.60		8.57	$	—
Exercisable at June 30, 2013		476		$	3.73		8.35	$	—