Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Stock-Based Compensation

Stock-based compensation expense

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Stock options	$	1.7	$	1.7	$	5.0	$	4.9
Restricted stock	0.4		0.3		0.9		0.9
Total stock-based compensation	$	2.1	$	2.0	$	5.9	$	5.8

Assumptions regarding volatility, expected life, dividend yield and risk free interest

	2012	2011
Risk-free interest rates	0.91%-1.78%	1.24% -3.12%
Expected life	6.5 years	6.5 years
Volatility	55.9%	57.2%
Expected dividend yield	0.0%	0.0%

Schedule of stock option activity

	Shares Subject to Options		Weighted Average Option Price		Weighted Average Remaining Contractual Term (Yrs)	Aggregate Intrinsic Value (in millions) (b)
Outstanding at December 31, 2011	5,096,253		$	10.64
Granted	469,250		12.82
Exercised	(422,558	)	8.54			$	2.9
Forfeited	(183,983	)	11.62
Outstanding at September 30, 2012	4,958,962		$	10.99	6.1	$	12.3
Vested at September 30, 2012	3,051,193		$	9.51	5.0	$	11.3
Vested and expected to vest at September 30, 2012 (a)	4,804,021		$	10.93	6.1	$	12.2

(a)	In addition to the options that are vested at September 30, 2012, the Company expects a portion of the unvested options to vest in the future. Options expected to vest in the future are determined by applying an estimated forfeiture rate to the options that are unvested as of September 30, 2012.
(b)	The aggregate intrinsic value is based on the positive difference between the fair value of the Company’s common stock price of $13.09 on September 30, 2012, or the date of exercises, as appropriate, and the exercise price of the underlying stock options.

Schedule of restricted stock activity

	Shares Subject to Restriction		Average Grant Date Fair Value
Outstanding at December 31, 2011	236,232		$	17.76
Granted	188,028		11.73
Vested	(73,446	)	15.50
Outstanding at September 30, 2012	350,814		$	15.00