Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Share-based Compensation Arrangement By Share-based Payment Award [Line Items]

Schedule Of Stock-Based Compensation By Expense Category

	Year Ended December 31,
	2011		2010		2009
	(In thousands)
Research and development	$	1,418	$	3,167	$	3,188
Selling, general and administrative		5,687		4,277		3,456
Total non-cash compensation expense related to share-based compensation included in operating expenses	$	7,105	$	7,444	$	6,644

Schedule Of Stock Option Activity

	Number of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (In years)		Aggregate Intrinsic Value of In-the-Money Options
	(In thousands, except weighted-average data)
Outstanding at December 31, 2010		2,183		$	8.13		7.13	$	8,710
Granted		2,234			7.97
Exercised		(33	)		5.08
Cancelled		(736	)		8.49
Outstanding at December 31, 2011		3,648		$	7.98		7.81	$	—
Exercisable at December 31, 2011		1,334		$	7.86		5.50	$	—

Schedule Of Weighted-Average Key Assumptions Used In Determining Fair Value Of Stock Option Awards

	Year Ended December 31,
	2011			2010			2009
Weighted-average volatility		88	%		80	%		77	%
Weighted-average risk-free interest rate		2.1	%		2.3	%		2.5	%
Weighted-average expected term in years		4.4			6.5			6.6
Dividend yield		0.0	%		0.0	%		0.0	%
Weighted-average grant date fair value per share	$	5.05		$	8.52		$	5.75

Stock Options Awards That Contain Performance Or Market Conditions [Member]

Share-based Compensation Arrangement By Share-based Payment Award [Line Items]

Schedule Of Stock Option Activity

	Number of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (In years)		Aggregate Intrinsic Value of In-the-Money Options
	(In thousands, except weighted-average data)
Outstanding at December 31, 2010		117		$	13.57		9.04	$	—
Granted		450			9.41
Exercised		—			—
Cancelled		(127	)		12.08
Outstanding at December 31, 2011		440		$	9.75		9.08	$	—
Exercisable at December 31, 2011		40		$	13.81		7.91	$	—

Schedule Of Weighted-Average Key Assumptions Used In Determining Fair Value Of Stock Option Awards

	Year Ended December 31,
	2011			2010			2009
Weighted-average volatility		88	%		80	%		111	%
Weighted-average risk-free interest rate		2.6	%		2.0	%		1.3	%
Weighted-average expected life in years		6.6			6.3			3.1
Dividend yield		0.0	%		0.0	%		0.0	%
Weighted-average grant date fair value per share	$	7.43		$	8.43		$	7.43

Non-Vested Restricted Stock And Restricted Stock Units [Member]

Share-based Compensation Arrangement By Share-based Payment Award [Line Items]

Schedule Of Non-Vested Stock Option Awards

	Number of Shares			Weighted-Average Grant Date Fair Value per share
	(In thousands)
Non-vested at December 31, 2009		500		$	10.55
Granted		43			11.72
Vested		(222	)		9.41
Forfeited		(6	)		8.61
Non-vested at December 31, 2010		315		$	11.56
Granted		856			8.35
Vested		(268	)		10.45
Forfeited		(92	)		9.69
Non-vested at December 31, 2011		811		$	8.75

Restricted Stock Awards That Contain Performance Or Market Conditions [Member]

Share-based Compensation Arrangement By Share-based Payment Award [Line Items]

Schedule Of Non-Vested Stock Option Awards

	Number of Shares			Weighted-Average Grant Date Fair Value
	(In thousands)
Non-vested at December 31, 2009		217		$	14.67
Granted		—			—
Vested		(161	)		13.54
Forfeited		(17	)		14.43
Non-vested at December 31, 2010		39		$	19.37
Granted		300			9.23
Vested		(7	)		13.95
Forfeited		(26	)		20.59
Non-vested at December 31, 2011		306		$	9.44