Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

The Company recorded stock-based compensation expense as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Stock options	$	1.0	$	1.6	$	2.6	$	3.3
Restricted stock	0.4		0.3		0.6		0.5
Total stock-based compensation	$	1.4	$	1.9	$	3.2	$	3.8

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

Assumptions regarding volatility, expected life, dividend yield and risk-free interest rates are required for the Black-Scholes model and are presented in the table below:

	2013	2012
Risk-free interest rates	1.07%-2.03%	0.93%-1.78%
Expected life	6.5 years	6.5 years
Volatility	54.9%	55.9%
Expected dividend yield	0.0%	0.0%

Schedule of stock option activity

Stock option activity for the six months ended June 30, 2013 was as follows:

	Shares Subject to Options		Weighted Average Option Price		Weighted Average Remaining Contractual Term (Yrs)	Aggregate Intrinsic Value (in millions) (b)
Outstanding at December 31, 2012	4,888,137		$	11.11
Granted	385,000		17.45
Exercised	(496,324	)	9.15
Forfeited	(127,245	)	10.09
Outstanding at June 30, 2013	4,649,568		$	11.87	6.2	$	20.8

Exercisable at June 30, 2013	2,913,287		$	10.37	4.8	$	17.0

Excercisable and expected to vest at June 30, 2013 (a)	4,528,028		$	11.80	6.1	$	20.5

Schedule of restricted stock activity

Restricted stock activity for the six months ended June 30, 2013 was as follows:

	Shares Subject to Restriction		Average Grant Date Fair Value
Outstanding at December 31, 2012	341,622		$	15.16
Granted	47,040		17.77
Vested	(45,705	)	18.60
Forfeited	(11,100	)	10.25
Outstanding at June 30, 2013	331,857		$	15.22