Stock-Based Compensation (Schedule of Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 29, 2014
Number Of Shares
Balance outstanding at beginning of period, in shares	7,242
Granted, in shares	198
Forfeited or expired, in shares	(57)
Exercised, in shares	(1,631)
Balance outstanding at end of period, in shares	5,752
Exercisable, in shares	4,418
Vested and expected to vest, in shares	5,575
Weighted Average Exercise Price
Balance outstanding at beginning of period, in dollars per share	$ 2.62
Granted, in dollars per share	$ 3.87
Forfeited or expired, in dollars per share	$ 4.56
Exercised, in dollars per share	$ 2.56
Balance outstanding at end of period, in dollars per share	$ 2.66
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 9 months 26 days
Exercisable	4 years 11 months 1 day
Vested and expected to vest	5 years 8 months 19 days
Aggregate Intrinsic Value
Balance outstanding	$ 13,161
Exercisable	10,632
Vested and expected to vest	$ 12,839