Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

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

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

RSU activity for the six months ended June 30, 2011, is as follows:

	Number of		Weighted Average Grant-Date
(in thousands, except weighted average fair value prices)	Shares		Fair Value
Nonvested restricted stock units outstanding at December 31, 2010	1,558		$	18.40
Restricted stock units granted	912		$	17.72
Performance stock units granted	188		$	17.45
Restricted stock units forfeited	(185	)	$	17.48
Restricted stock units vested	(291	)	$	18.57
Nonvested restricted stock units outstanding at June 30, 2011	2,182		$	18.06

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair values of these stock options were estimated using the Black-Scholes valuation model with the following weighted-average assumptions:

Expected dividend yield	—	%
Risk-free interest rate (1)	2.01	%
Expected volatility (2)	32.02	%
Expected life (3)	5.5

(1) The risk-free interest rate for the periods within the contractual term of the options is based on the U.S. Treasury yield curve in effect at the time of the grant.

(2) The expected volatility is a measure of the amount by which a stock price has fluctuated or is expected to fluctuate based primarily on our and our peers' historical data.

(3) The expected life is the period of time, on average, that participants are expected to hold their options before exercise based primarily on  our historical data.

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Option activity for the six months ended June 30, 2011, is as follows:

(in thousands, except weighted average price)	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Options outstanding at December 31, 2010	5,129		$	21.27
Options granted	563		$	17.45
Options exercised	(134	)	$	17.60
Options canceled	(552	)	$	21.12
Options outstanding at June 30, 2011	5,006		$	20.96	4.8	$	1,382
Options vested and expected to vest at June 30, 2011	4,981		$	20.97	4.8	$	1,382
Options exercisable at June 30, 2011	3,526		$	22.09	3.0	$	1,382

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The following table sets forth the stock-based compensation expense recognized for the three and six months ended June 30, 2011 and 2010.

	For the Three Months Ended				For the Six Months Ended
	June 30,				June 30,
(in thousands)	2011		2010		2011		2010
Stock options	$	434	$	216	$	1,141	$	416
Restricted stock	2,341		2,170		4,698		8,125
Employee stock purchase plan	116		112		191		423
	$	2,891	$	2,498	$	6,030	$	8,964