Operating Segment and Geographic Information - Major Customers With Revenues Greater Than 10% (Details) - Customer Concentration Risk - Sales Revenue	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Intel
Revenue, Major Customer [Line Items]
Total revenues attributable to customers greater than 10%	25.90%	30.10%	19.60%
Samsung
Revenue, Major Customer [Line Items]
Total revenues attributable to customers greater than 10%			14.60%
SK Hynix
Revenue, Major Customer [Line Items]
Total revenues attributable to customers greater than 10%			14.30%
Micron
Revenue, Major Customer [Line Items]
Total revenues attributable to customers greater than 10%			11.70%