Summary of Significant Accounting Policies - Concentration of Credit Risk and Other Risks and Uncertainties (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Intel | Sales Revenue
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%	25.90%	30.10%	19.60%
Samsung | Sales Revenue
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%			14.60%
SK Hynix | Sales Revenue
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%			14.30%
Micron | Sales Revenue
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%			11.70%
Major Customer 1 | Accounts Receivable
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%	24.10%	21.00%
Major Customer 2 [Member] | Accounts Receivable
Concentration Risk [Line Items]
Total revenues attributable to customers greater than 10%	13.60%