Operating Segment and Geographic Information (Details 1) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Dec. 29, 2018	Oct. 06, 2018	Mar. 24, 2018	Dec. 30, 2017	Oct. 07, 2017	Mar. 25, 2017	Jul. 14, 2018	Jul. 15, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 50,992	$ 43,955	$ 32,149	$ 48,685	$ 42,861	$ 31,866	$ 48,684	$ 53,921	$ 175,780	$ 177,333	$ 171,662
North America [Member]
Segment Reporting Information [Line Items]
Net Sales									172,656	175,065	168,998
Europe [Member]
Segment Reporting Information [Line Items]
Net Sales									965	974	1,302
Other [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 2,159	$ 1,294	$ 1,362