Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock options outstanding under equity-based compensation plans

A summary of the changes in stock options outstanding during the three months ended March 31, 2012 is presented below:

	Number of Options		Weighted Average Remaining Contract Term (Years)	Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Options outstanding as of December 31, 2011	3,868		8.3	$	9.67	$	3,876
Granted	10			11.10
Exercised	(4	)		6.16		20
Canceled	—			—
Options outstanding as of March 31, 2012	3,874		8.1	$	9.68	$	10,735
Options exercisable as of March 31, 2012	902		5.9	$	12.51	$	2,118

RSUs outstanding under equity-based compensation plans

A summary of the changes in RSUs outstanding during the three months ended March 31, 2012 is presented below:

	Number of RSUs		Weighted Average Grant Date Fair Value Per RSU
Unvested units as of December 31, 2011	4,771		$	10.49
Granted	1,534		12.62
Vested	(660	)	13.92
Canceled	(20	)	12.02
Unvested units as of March 31, 2012	5,625		$	10.66