Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

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

Summary of stock option activity

	Stock Options		Weighted- Average Exercise Price
Outstanding at December 31, 2011	3,776		$	16.92
Granted	—		$	—
Exercised	(172	)	$	15.20
Canceled	(39	)	$	20.13
Outstanding at March 31, 2012	3,565		$	16.96
Exercisable at March 31, 2012	2,671		$	17.29
Vested and expected to vest at March 31, 2012	3,525		$	16.98

Summary of nonvested stock activity

	Shares		Grant Date Weighted- Average Fair Value Per Share
Outstanding at December 31, 2011	1,516		$	20.76
Granted	36		$	22.85
Vested	(84	)	$	30.22
Forfeited/Canceled	2		$	25.10
Outstanding at March 31, 2012	1,470		$	20.27