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. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	7,242
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 0.78
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 5.94
Weighted average remaining contractual life (in years)	5 years 9 months
Weighted average exercise price (in dollars per share)	$ 2.62
Options vested and exercisable (in shares)	5,649
Weighted average exercise price (in dollars per share)	$ 2.54
Exercise Price $0.78 - $0.94 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	634
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 0.78
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 0.94
Weighted average remaining contractual life (in years)	4 years 9 months 25 days
Weighted average exercise price (in dollars per share)	$ 0.90
Options vested and exercisable (in shares)	634
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)	1,155
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 1.63
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 1.63
Weighted average remaining contractual life (in years)	5 years 1 month 24 days
Weighted average exercise price (in dollars per share)	$ 1.63
Options vested and exercisable (in shares)	1,155
Weighted average exercise price (in dollars per share)	$ 1.63
Exercise Price $2.06 - $2.75 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	949
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 1.75
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 2.75
Weighted average remaining contractual life (in years)	5 years 10 months 24 days
Weighted average exercise price (in dollars per share)	$ 2.42
Options vested and exercisable (in shares)	552
Weighted average exercise price (in dollars per share)	$ 2.53
Exercise Price $2.76 - 2.76 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	11
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 2.76
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 2.76
Weighted average remaining contractual life (in years)	8 years 1 month 10 days
Weighted average exercise price (in dollars per share)	$ 2.76
Options vested and exercisable (in shares)	4
Weighted average exercise price (in dollars per share)	$ 2.76
Exercise Price $2.78- 2.78 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	2,094
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 2.78
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 2.78
Weighted average remaining contractual life (in years)	6 years 10 months 24 days
Weighted average exercise price (in dollars per share)	$ 2.78
Options vested and exercisable (in shares)	1,593
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)	839
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 2.82
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 3.02
Weighted average remaining contractual life (in years)	2 years 9 months 29 days
Weighted average exercise price (in dollars per share)	$ 2.96
Options vested and exercisable (in shares)	810
Weighted average exercise price (in dollars per share)	$ 2.96
Exercise Price $3.04- 3.48 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	801
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 3.04
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 3.48
Weighted average remaining contractual life (in years)	8 years 4 months 17 days
Weighted average exercise price (in dollars per share)	$ 3.39
Options vested and exercisable (in shares)	240
Weighted average exercise price (in dollars per share)	$ 3.36
Exercise Price $3.54 - 4.17 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	681
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 3.54
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 4.17
Weighted average remaining contractual life (in years)	4 years 9 months 4 days
Weighted average exercise price (in dollars per share)	$ 4.07
Options vested and exercisable (in shares)	583
Weighted average exercise price (in dollars per share)	$ 4.15
Exercise Price $4.36 - 4.36 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	35
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 4.36
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 4.36
Weighted average remaining contractual life (in years)	1 year 5 months 1 day
Weighted average exercise price (in dollars per share)	$ 4.36
Options vested and exercisable (in shares)	35
Weighted average exercise price (in dollars per share)	$ 4.36
Exercise Price $5.94 - 5.94 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	43
Range of exercise price, options outstanding, minimum (in dollars per share)	$ 5.94
Range of exercise price, options outstanding, maximum (in dollars per share)	$ 5.94
Weighted average remaining contractual life (in years)	2 years 3 months 29 days
Weighted average exercise price (in dollars per share)	$ 5.94
Options vested and exercisable (in shares)	43
Weighted average exercise price (in dollars per share)	$ 5.94