Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

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

Schedule of Valuation Assumptions

The weighted-average assumptions used in the model were as follows:

	2013			2012			2011
Risk-free interest	1.1		%	0.4		%	1.1		%
Expected life (years)	4.3			3.4			3.7
Expected dividend yield	—			—			—
Volatility	39.7		%	32.7		%	26.2		%
Weighted-average Black-Scholes fair value per share at date of grant	$	6.04		$	2.84		$	1.89

Schedule of Share-based Compensation, Stock Options, Activity

The tables below summarize the option activity under the Plan:

	Shares		Weighted- Average Exercise Price
Outstanding—December 28, 2010	2,420,861		8.67
Granted	283,307		8.67
Forfeited	(81,330	)	8.67
Exercised	(1,815	)	8.67
Outstanding—January 3, 2012	2,621,023		8.67
Granted	516,473		11.27
Forfeited	(164,329	)	8.68
Exercised	—		—
Outstanding—January 1, 2013	2,973,167		9.12
Granted	555,273		18.06
Forfeited	(55,389	)	11.89
Exercised	(163,179	)	8.72
Outstanding—December 31, 2013	3,309,872		$	10.59

10. Stock-Based Compensation (continued)

	Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Years of Contractual Life	Aggregate Intrinsic Value(1) (in thousands)
Outstanding as of December 31, 2013	3,309,872	$	10.59	7.65	$	83,842
Vested and expected to vest	3,291,058	10.56		7.63	83,475
Exercisable as of December 31, 2013	2,679,130	9.45		7.27	70,925

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(1) Aggregate intrinsic value represents the amount by which fair value of the Company's stock exceeds the exercise price of the option as of December 31, 2013.