Industry Segments - Additional Information (Detail) (Semiconductor equipment [Member])	3 Months Ended
Mar. 30, 2013 Customer	Mar. 31, 2012 Customer
Semiconductor equipment [Member]
Segment Information [Line Items]
Number of customers	1	2
Percentage of consolidated net sales	10.00%	10.00%
Combined percentage of consolidated net sales	20.00%	59.00%

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration