Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Stock-Based Compensation [Abstract]

Schedule of assumptions used to estimate value of each option award

	Year Ended December 31,
Assumption	2013	2012	2011
Expected volatility	49.2% - 49.6%	49.2% - 50.3%	31.0% - 50.3%
Expected dividend yield	0.0%	0.0%	0.0%
Expected life (in years)	6.3	6.3	6.3
Risk-free interest rate	1.69% - 2.02%	0.78% - 1.43%	1.07% - 2.65%

Summary of option activity under the MSIP

	Stock Options			Weighted Avg. Exercise Price		Weighted Avg. Remaining Contractual Term (in years)
Total outstanding, December 31, 2012		5,978,790		$	15.74
Granted to employees		1,609,963		$	15.24
Exercised		(53,333	)	$	15.00
Forfeited		(632,748	)	$	16.82
Expired		(1,597,039	)	$	15.47
Total outstanding, December 31, 2013		5,305,633		$	15.54		5.81
Total exercisable, December 31, 2013		3,287,035		$	15.23		3.57

Summary of RSU activity under the MSIP

	RSUs			Weighted Avg. Grant Date Fair Value
Total outstanding, December 31, 2012		223,849		$	17.40
Granted to employees		691,441		$	17.09
Vested		(119,834	)	$	16.79
Forfeited		(316,126	)	$	18.86
Total outstanding, December 31, 2013		479,330		$	16.04