Stock-Based Compensation (Schedule of Options Outstanding and Options Exercisable) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	6,960
Range of exercise price, options outstanding, minimum	$ 0.78
Range of exercise price, options outstanding, maximum	$ 6.53
Weighted average remaining contractual life (in years)	6 years 3 months 29 days
Weighted average exercise price (in dollars per share)	$ 2.55
Options vested and exercisable (in shares)	4,991
Weighted average exercise price (in dollars per share)	$ 2.54
Exercise Price $0.78 to 1.29 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	650
Range of exercise price, options outstanding, minimum	$ 0.78
Range of exercise price, options outstanding, maximum	$ 1.29
Weighted average remaining contractual life (in years)	5 years 9 months 7 days
Weighted average exercise price (in dollars per share)	$ 0.90
Options vested and exercisable (in shares)	648
Weighted average exercise price (in dollars per share)	$ 0.90
Exercise Price $1.63 - 1.63 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	1,215
Range of exercise price, options outstanding, minimum	$ 1.63
Range of exercise price, options outstanding, maximum	$ 1.63
Weighted average remaining contractual life (in years)	6 years 1 month 10 days
Weighted average exercise price (in dollars per share)	$ 1.63
Options vested and exercisable (in shares)	1,090
Weighted average exercise price (in dollars per share)	$ 1.63
Exercise Price $1.75 - 2.72 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	722
Range of exercise price, options outstanding, minimum	$ 1.75
Range of exercise price, options outstanding, maximum	$ 2.72
Weighted average remaining contractual life (in years)	8 years 8 months 1 day
Weighted average exercise price (in dollars per share)	$ 2.22
Options vested and exercisable (in shares)	113
Weighted average exercise price (in dollars per share)	$ 2.44
Exercise Price $2.73 - 2.76 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	292
Range of exercise price, options outstanding, minimum	$ 2.73
Range of exercise price, options outstanding, maximum	$ 2.76
Weighted average remaining contractual life (in years)	2 years 5 months 23 days
Weighted average exercise price (in dollars per share)	$ 2.75
Options vested and exercisable (in shares)	279
Weighted average exercise price (in dollars per share)	$ 2.75
Exercise Price $2.78- 2.78 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	2,227
Range of exercise price, options outstanding, minimum	$ 2.78
Range of exercise price, options outstanding, maximum	$ 2.78
Weighted average remaining contractual life (in years)	7 years 9 months 26 days
Weighted average exercise price (in dollars per share)	$ 2.78
Options vested and exercisable (in shares)	1,165
Weighted average exercise price (in dollars per share)	$ 2.78
Exercise Price $2.82 - 3.02 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	857
Range of exercise price, options outstanding, minimum	$ 2.82
Range of exercise price, options outstanding, maximum	$ 3.02
Weighted average remaining contractual life (in years)	3 years 10 months 6 days
Weighted average exercise price (in dollars per share)	$ 2.96
Options vested and exercisable (in shares)	811
Weighted average exercise price (in dollars per share)	$ 2.96
Exercise Price $3.04 - 4.17 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	901
Range of exercise price, options outstanding, minimum	$ 3.04
Range of exercise price, options outstanding, maximum	$ 4.17
Weighted average remaining contractual life (in years)	5 years 5 months 9 days
Weighted average exercise price (in dollars per share)	$ 3.89
Options vested and exercisable (in shares)	792
Weighted average exercise price (in dollars per share)	$ 3.94
Exercise Price $4.36 - 5.94 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	81
Range of exercise price, options outstanding, minimum	$ 4.36
Range of exercise price, options outstanding, maximum	$ 5.94
Weighted average remaining contractual life (in years)	2 years 9 months 29 days
Weighted average exercise price (in dollars per share)	$ 5.23
Options vested and exercisable (in shares)	81
Weighted average exercise price (in dollars per share)	$ 5.23
Exercise Price $6.00 - 6.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	5
Range of exercise price, options outstanding, minimum	$ 6.00
Range of exercise price, options outstanding, maximum	$ 6.00
Weighted average remaining contractual life (in years)	8 years 0 months 26 days
Weighted average exercise price (in dollars per share)	$ 6.00
Options vested and exercisable (in shares)	2
Weighted average exercise price (in dollars per share)	$ 6.00
Exercise Price $6.53 - 6.53 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	10
Range of exercise price, options outstanding, minimum	$ 6.53
Range of exercise price, options outstanding, maximum	$ 6.53
Weighted average remaining contractual life (in years)	9 months
Weighted average exercise price (in dollars per share)	$ 6.53
Options vested and exercisable (in shares)	10
Weighted average exercise price (in dollars per share)	$ 6.53