Operating Segments and Geographic Information, Revenue by Major Customers (Detail)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	40.00%	38.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Dell Inc. [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	16.00%	15.00%	15.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Lenovo Group Limited [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	13.00%	13.00%	13.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | HP Inc. [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	11.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Hewlett-Packard Company [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		10.00%	18.00%
Credit Concentration Risk [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	36.00%	31.00%