Business Segments (Details Textual)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 03, 2015 Customer	Sep. 27, 2014 Customer	Oct. 03, 2015 Segment Customer	Sep. 27, 2014 Customer	Jan. 03, 2015 Customer
Segment Reporting Information [Line Items]
Number of operating segments | Segment			1
Number of customers accounted for more than ten percent of revenue	0	0	0	0
Number of customers accounted for more than ten percent of account receivable			0		1
Customer Concentration Risk | Accounts Receivable
Segment Reporting Information [Line Items]
Percentage of concentration risk					13.00%
United States | Customer Concentration Risk | Revenue, Total
Segment Reporting Information [Line Items]
Percentage of concentration risk	59.00%	54.80%	56.50%	52.30%