Stock-Based Compensation (Schedule of Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 28, 2014
Number Of Shares
Balance outstanding at beginning of period, in shares	7,242
Granted, in shares	208
Forfeited or expired, in shares	(154)
Exercised, in shares	(1,687)
Balance outstanding at end of period, in shares	5,609
Exercisable, in shares	4,461
Vested and expected to vest, in shares	5,404
Weighted Average Exercise Price
Balance outstanding at beginning of period, in dollars per share	$ 2.62
Granted, in dollars per share	$ 3.84
Forfeited or expired, in dollars per share	$ 3.55
Exercised, in dollars per share	$ 2.56
Balance outstanding at end of period, in dollars per share	$ 2.66
Exercisable, in dollars per share	$ 2.55
Vested and expected to vest, in dollars per share	$ 2.64
Weighted Average Remaining Term
Balance outstanding	5 years 5 months 1 day
Exercisable	4 years 7 months 6 days
Vested and expected to vest	5 years 3 months 15 days
Aggregate Intrinsic Value
Balance outstanding	$ 3,237
Exercisable	2,992
Vested and expected to vest	$ 3,199