Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Share-Based Compensation [Abstract]

Weighted-average assumptions for options issued during the indicated periods

	Three Months Ended March 31,
	2012			2011
Dividend yield		0	%		0	%
Expected volatility		61.2	%		58.8	%
Risk-free interest rate		0.8	%		1.9	%
Expected life of options (in years)		4.4			3.9
Weighted-average grant-date fair value	$	15.96		$	19.33

Stock option activity

	Shares			Wtd. Avg. Exercise Price
Options outstanding, beginning of period		1,375,281		$	32.46
Options granted		323,439		$	32.60
Options canceled		(17,199	)	$	47.15
Options exercised		(27,116	)	$	18.64
Options outstanding, end of period		1,654,405		$	32.56
Options exercisable, end of period		1,065,306		$	31.45

Restricted stock activity

	Shares			Wtd. Avg. Grant Price
Restricted shares outstanding, beginning of period		834,703		$	31.89
Restricted shares granted		474,200		$	32.62
Restricted shares canceled		(9,053	)	$	32.33
Restricted shares vested		(309,816	)	$	26.73
Restricted shares outstanding, end of period		990,034		$	33.85