Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation

Stock options outstanding under equity-based compensation plans

	Number of Options			Weighted Average Remaining Contract Term (Years)		Weighted Average Exercise Price		Aggregate Intrinsic Value
Options outstanding as of December 31, 2010		6,751			6.0	$	20.72	$	1,814
Granted		2,661				$	8.69		—
Exercised		(200	)			$	7.40	$	344
Canceled		(5,344	)			$	23.23		—
Options outstanding as of December 31, 2011		3,868			8.3	$	9.67	$	3,876
Options exercisable as of December 31, 2011		662			5.0	$	13.48	$	714
Options expected to vest after December 31, 2011		3,203			9.0	$	8.87	$	3,161

Schedule of weighted-average assumptions used to calculate fair value of each option granted

	Year Ended December 31,
	2011			2010			2009
Assumptions:
Expected volatility		52	%		51	%		47	%
Risk-free interest rate		1.9	%		2.6	%		2.3	%
Dividend yield		—			—			—
Expected life (in years)		6			6			6

RSUs outstanding under equity-based compensation plans

	Number of Restricted Stock Units			Weighted Average Grant Date Fair Value
Unvested units as of December 31, 2010		2,440		$	15.13
Granted		3,341		$	8.52
Vested		(912	)	$	15.37
Canceled		(98	)	$	13.58
Unvested units as of December 31, 2011		4,771		$	10.49