Industry Segments - Additional Information (Detail) (Semiconductor equipment [Member])	3 Months Ended		6 Months Ended
	Jun. 29, 2013 Customer	Jun. 30, 2012 Customer	Jun. 29, 2013 Customer	Jun. 30, 2012 Customer
Semiconductor equipment [Member]
Segment Information [Line Items]
Number of customers	2	1	1	1
Percentage of consolidated net sales	10.00%	10.00%	10.00%	10.00%
Combined percentage of consolidated net sales	27.00%	38.00%	18.00%	42.00%