Stock Option Plans and Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

Stock Option Plans and Share-Based Compensation [Abstract]

PSU % eligible vesting vs Total Shareholder Return - Second year [Table Text Block]

The following table shows the percent of PSUs granted in 2012 eligible for further time-based vesting based on our percentile placement:

Percentile Placement of Our Total Shareholder Return	% of PSUs Eligible for Time- Based Vesting
Below the 35th percentile	—%
At least the 35th percentile, but below the 50th percentile	50%
At least the 50th percentile	100%

Schedule of Stock Options Roll Forward [Table Text Block]

A summary of aggregate option activity for the six months ended June 30, 2013 is presented below:

Options:	Number of Shares		Weighted- Average Exercise Price
	(in thousands)
Outstanding at December 31, 2012	4,470		$	14.06
Granted	243		$	17.21
Exercised	(849	)	$	11.18
Forfeited	(59	)	$	14.21
Expired	(51	)	$	14.98
Outstanding at June 30, 2013	3,754		$	14.90
Exercisable at June 30, 2013	2,686		$	14.84

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

A summary of activity of both restricted stock and RSUs for the six months ended June 30, 2013 is presented below:

	Restricted Stock				Restricted Stock Units
			Weighted -				Weighted -
	Number of Shares		Average Grant Date Fair Value Per Share		Number of Shares		Average Grant Date Fair Value Per Share
	(in thousands)				(in thousands)
Non-vested, December 31, 2012	58		$	14.19	389		$	14.09
Granted	55		$	18.20	103		$	17.46
Vested	(61	)	$	14.23	(80	)	$	13.95
Forfeited	—		$	—	(19	)	$	13.88
Non-vested, June 30, 2013	52		$	18.43	393		$	15.01

PSU % eligible vesting vs total Shareholder Return placement - First year [Table Text Block]

The following table shows the percent of PSUs granted in 2011 and eligible for further time-based vesting based on our percentile placement:

Percentile Placement of Our Total Stockholder Return	% of PSUs Eligible for Time- Based Vesting
Below the 35th percentile	—%
At least the 35th percentile, but below the 50th percentile	50%
At least the 50th percentile, but below the 65th percentile	100%
At least the 65th percentile, but below the 75th percentile (1)	110% to 119%
At or above the 75th percentile	120%

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(1)The actual percentage of PSUs eligible for further time-based vesting is based on straight-line interpolation, where, for example, if the ranking is the 70th percentile, then the vesting percentage is 115%.

A summary of activity of the PSUs for the six months ended June 30, 2013 is presented below:

Performance-based Stock Units	Number of Units		Weighted- Average Grant Date Fair Value Per Unit
	(in thousands)
Non-vested, December 31, 2012	175		$	11.00
Granted	140		$	14.74
Vested	(38	)	$	11.02
Forfeited	(24	)	$	—
Non-vested, June 30, 2013	253		$	13.07

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The impact on our results for share-based compensation for the three and six months ended June 30, 2013 and 2012 was as follows (in thousands):