Share-Based Compensation (Details 1) - ServicePeriodBasedStockOptions [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Number of Shares
Outstanding at Beginning of Period	4,314,263	4,241,386	4,038,070
Options Granted	742,485	730,562	744,662
Option classification from Employee to Non-Employee		(514,024)	(37,717)
Options Exercised	(238,423)	(40,236)	(178,238)
Options Expired	(183,334)		(84,633)
Options Forfeited	(353,840)	(103,425)	(240,758)
Outstanding at End of Period	4,281,151	4,314,263	4,241,386
Exercisable at End of Period	3,192,519
Weighted Average Exercise Price
Outstanding at Beginning of Period	$ 3.50	$ 3.39	$ 3.18
Options Granted	3.91	3.66	4.17
Option classification from Employee to Non-Employee		2.79	2.28
Options Exercised	2.67	2.37	2.61
Options Expired	4.50		3.00
Options Forfeited	4.15	3.93	3.39
Outstanding at End of Period	3.52	$ 3.50	$ 3.39
Exercisable at End of Period	$ 3.40
Weighted Average Remaining Contractual Term
Outstanding at Beginning of Period	6 years 5 months 8 days	7 years	7 years 5 months 5 days
Options granted	10 years		10 years
Option classification from Employee to Non-Employee		7 years 9 months 11 days	8 years 8 months 5 days
Outstanding at End of Period	6 years 4 months 10 days	6 years 5 months 8 days	7 years
Exercisable at End of Period	5 years 5 months 1 day
Fair Value of Options Granted	$ 2.49	$ 2.28	$ 2.70
Aggregate Intrinsic Value
Aggregate Intrinsic Value outstanding	$ 1,352,000
Aggregate Intrinsic Value, exercised	502,000	$ 58,000	$ 156,000
Aggregate Intrinsic Value exercisable	$ 1,234,000