Stock-Based Compensation (Schedule of Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2014
Number Of Shares
Balance outstanding at beginning of period, in shares	7,242
Granted, in shares	38
Forfeited or expired, in shares	(8)
Exercised, in shares	(1,167)
Balance outstanding at end of period, in shares	6,105
Exercisable, in shares	4,670
Vested and expected to vest, in shares	5,908
Weighted Average Exercise Price
Balance outstanding at beginning of period, in dollars per share	$ 2.62
Granted, in dollars per share	$ 5.28
Forfeited or expired, in dollars per share	$ 3.28
Exercised, in dollars per share	$ 2.53
Balance outstanding at end of period, in dollars per share	$ 2.65
Exercisable, in dollars per share	$ 2.54
Vested and expected to vest, in dollars per share	$ 2.64
Weighted Average Remaining Term
Balance outstanding	5 years 10 months 24 days
Exercisable	5 years 0 months 11 days
Vested and expected to vest	5 years 9 months 15 days
Aggregate Intrinsic Value
Balance outstanding	$ 15,464
Exercisable	12,349
Vested and expected to vest	$ 15,061