Operating Segment and Geographic Information (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 26, 2015	Oct. 03, 2015	Jul. 11, 2015	Mar. 21, 2015	Dec. 27, 2014	Oct. 04, 2014	Jul. 12, 2014	Mar. 22, 2014	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Segment Reporting Information [Line Items]
Net Sales	$ 43,744	$ 34,584	$ 43,795	$ 33,419	$ 40,643	$ 31,599	$ 38,012	$ 27,721	$ 155,542	$ 137,975	$ 132,991
North America [Member]
Segment Reporting Information [Line Items]
Net Sales									152,890	135,585	129,435
Europe [Member]
Segment Reporting Information [Line Items]
Net Sales									1,234	1,408	1,946
Other Credit Derivatives [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 1,418	$ 982	$ 1,610