Segment and Related Information - Customers Comprising 10% of Consolidated Sales (Detail) (Semiconductor Equipment [Member], Consolidated Net Sales [Member], Customer Concentration Risk [Member], Intel [Member])	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Semiconductor Equipment [Member] | Consolidated Net Sales [Member] | Customer Concentration Risk [Member] | Intel [Member]
Segment Reporting Information [Line Items]
Net sales percentage	15.00%	17.00%	42.00%