Stock-Based Compensation (Schedule of Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Number Of Shares
Balance outstanding at beginning of period, in shares	7,483	8,069	8,331
Granted, in shares	791	876	1,739
Foreited or expired, in shares	(935)	(803)	(832)
Exercised, in shares	(379)	(659)	(1,169)
Balance outstanding at end of period, in shares	6,960	7,483	8,069
Exercisable, in shares	4,991
Vested and expected to vest, in shares	6,573
Weighted Average Exercise Price
Balance outstanding at beginning of period, in dollars per share	$ 2.58	$ 2.74	$ 3.37
Granted, in dollars per share	$ 2.43	$ 2.81	$ 2.79
Forfeited or expired, in dollars per share	$ 3.04	$ 4.51	$ 9.35
Exercised, in dollars per share	$ 1.87	$ 2.46	$ 2.59
Balance outstanding at end of period, in dollars per share	$ 2.55	$ 2.58	$ 2.74
Exercisable, in dollars per share	$ 2.54
Vested and expected to vest, in dollars per share	$ 2.55
Weighted Average Remaining Term
Balance outstanding	6 years 3 months 29 days
Exercisable	5 years 5 months 9 days
Vested and expected to vest	6 years 2 months 5 days
Aggregate Intrinsic Value
Balance outstanding	$ 1,683
Exercisable	1,556
Vested and expected to vest	$ 1,666