Strategic Technology Transactions, Goodwill and Other Purchased Intangible Assets - Changes in Carrying Value of Goodwill by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 29, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Additions	$ 19,273
Goodwill	58,756	[1]	58,060
Impact of currency exchange	(1,176)		696
Goodwill	76,853
Semiconductor equipment [Member]
Segment Reporting Information [Line Items]
Additions	19,273
Goodwill	55,520		54,872
Impact of currency exchange	(1,145)		648
Goodwill	73,648
Microwave communications [Member]
Segment Reporting Information [Line Items]
Additions
Goodwill	3,236		3,188
Impact of currency exchange	(31)		48
Goodwill	$ 3,205

[1] Derived from December 29, 2012 audited financial statements