Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Share-Based Compensation [Abstract]

Weighted-average assumptions for options issued during the indicated periods

	Three Months Ended				Nine months Ended
	September 30,				September 30,
	2011		2010		2011			2010
Dividend yield		N/A		N/A		0	%		0	%
Expected volatility		N/A		N/A		58.8	%		63.0	%
Risk-free interest rate		N/A		N/A		1.9	%		2.1	%
Expected life of options (in years)		N/A		N/A		3.8			4.3
Weighted-average grant-date fair value		N/A		N/A	$	19.17		$	12.60

Stock option activity

				Wtd. Avg.
	Shares			Exercise Price
Options outstanding, beginning of period		1,361,779		$	29.67
Options granted		307,394		$	42.56
Options canceled		(67,529	)	$	55.19
Options exercised		(223,963	)	$	22.64
Options outstanding, end of period		1,377,681		$	32.44
Options exercisable, end of period		731,300		$	30.96

Restricted stock activity

				Wtd. Avg.
	Shares			Grant Price
Restricted shares outstanding, beginning of period		734,286		$	22.87
Restricted shares granted		490,050		$	40.50
Restricted shares canceled		(30,542	)	$	31.53
Restricted shares vested		(337,556	)	$	24.68
Restricted shares outstanding, end of period		856,238		$	31.93