Share-Based Compensation (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 30, 2017
Weighted Average Remaining Contractual Term
Fair Value of Options Granted		$ 3.04
ServicePeriodBasedStockOptions [Member]
Number of Shares
Outstanding at Beginning of Period	5,467	5,144
Options Granted	3,071	1,285
Options Exercised	(131)	(885)
Options Expired	(245)	(3)
Options Forfeited	(139)	(74)
Outstanding at End of Period	8,023	5,467
Exercisable at End of Period	4,351
Weighted Average Exercise Price
Outstanding at Beginning of Period	$ 3.49	$ 3.49
Options Granted	4.29	3.48
Options Exercised	4.02	3.43
Options Expired	4.5	4.5
Options Forfeited	4.21	3.88
Outstanding at End of Period	3.75	$ 3.49
Exercisable at End of Period	$ 3.47
Weighted Average Remaining Contractual Term
Outstanding at Beginning of Period	6 years 4 months 28 days	6 years 2 months 1 day
Options granted	10 years	10 years
Outstanding at End of Period	7 years 1 month 10 days	6 years 4 months 28 days
Exercisable at End of Period	5 years 3 months 25 days
Fair Value of Options Granted	$ 2.74	$ 2.31
Aggregate Intrinsic Value
Aggregate Intrinsic Value outstanding	$ 13,101
Aggregate Intrinsic Value, exercised	109	$ 2,479
Aggregate Intrinsic Value outstanding	2,207	$ 13,101
Aggregate Intrinsic Value exercisable	$ 1,802