Business Segments (Details Textual)	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 04, 2015 Customer	Jun. 28, 2014 Customer	Jul. 04, 2015 Segment Customer	Jun. 28, 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	59.70%	56.50%	55.30%	51.10%
Maximum | Customer Concentration Risk | Revenue, Total
Segment Reporting Information [Line Items]
Percentage of concentration risk	10.00%	10.00%	10.00%	10.00%
Maximum | Customer Concentration Risk | Accounts Receivable
Segment Reporting Information [Line Items]
Percentage of concentration risk			10.00%