Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

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

Stock Options Outstanding Under Equity-Based Compensation Plans

A summary of the changes in stock options outstanding during the three months ended March 31, 2015 is presented below:

	Number of Options		Weighted Average Remaining Contract Term (Years)	Weighted Average Exercise Price		Aggregate Intrinsic Value
Options outstanding as of December 31, 2014	1.6		6.3	$	11.61	$	4.0
Granted	0.2			12.04		—
Exercised	(0.3	)		9.83		0.9
Canceled	—					—
Options outstanding as of March 31, 2015	1.5		7.2	$	11.78	$	1.2
Options exercisable as of March 31, 2015	0.9		5.9	$	11.14	$	0.9

RSUs Outstanding Under Equity-Based Compensation Plans

A summary of the changes in RSUs outstanding during the three months ended March 31, 2015 is presented below:

	Number of RSUs		Weighted Average Grant Date Fair Value Per RSU
Unvested units as of December 31, 2014	5.0		$	13.12
Granted	0.3		13.15
Vested	(0.7	)	12.72
Canceled	(0.3	)	15.08
Unvested units as of March 31, 2015	4.3		$	13.39