Strategic Technology Transactions, Goodwill and Purchased Intangible Assets - Purchased Intangible Assets, Subject to Amortization (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 57,723	$ 64,468
Accumulated Amortization	30,359	25,536
Rasco Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,845	33,689
Accumulated Amortization	22,616	21,319
Remaining Useful Life	2 years
Ismeca Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,014	29,915
Accumulated Amortization	6,879	3,809
Remaining Useful Life	6 years
Duma Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	864	864
Accumulated Amortization	$ 864	$ 408
Remaining Useful Life	0 years

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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