Share-Based Compensation (Details 1) - ServicePeriodBasedStockOptions [Member] - USD ($)		12 Months Ended
		Dec. 30, 2017		Dec. 31, 2016	Jan. 02, 2016
Number of Shares
Outstanding at Beginning of Period		4,281,151		4,314,263	4,241,386
Options Granted		1,110,404		742,485	730,562
Option classification from Employee to Non-Employee					(514,024)
Options Exercised		(863,712)		(238,423)	(40,236)
Options Expired		(3,334)		(183,334)
Options Forfeited		(73,483)		(353,840)	(103,425)
Outstanding at End of Period		4,451,026		4,281,151	4,314,263
Exercisable at End of Period		2,937,613
Weighted Average Exercise Price
Outstanding at Beginning of Period		$ 3.52		$ 3.50	$ 3.39
Options Granted		3.25		3.91	3.66
Option classification from Employee to Non-Employee					2.79
Options Exercised		2.42		2.67	2.37
Options Expired		4.50		4.50
Options Forfeited		3.88		4.15	3.93
Outstanding at End of Period		4.45		$ 3.52	$ 3.50
Exercisable at End of Period		$ 3.54
Weighted Average Remaining Contractual Term
Outstanding at Beginning of Period		6 years 4 months 10 days		6 years 5 months 8 days	7 years
Options granted		10 years		10 years	10 years
Option classification from Employee to Non-Employee					7 years 9 months 11 days
Outstanding at End of Period		5 years 9 months 4 days		6 years 4 months 10 days	6 years 5 months 8 days
Exercisable at End of Period		5 years 2 months 5 days
Fair Value of Options Granted		$ 2.07		$ 2.49	$ 2.28
Aggregate Intrinsic Value
Aggregate Intrinsic Value, exercised		$ 2,455,000		$ 502,000	$ 58,000
Aggregate Intrinsic Value outstanding		10,740,000	[1]	$ 1,352,000
Aggregate Intrinsic Value exercisable	[1]	$ 7,230,000

[1] The aggregate intrinsic values in the table above are based on the Company's closing stock price of $5.88 on the last day of business for the year ended December 30, 2017.