Strategic Technology Transactions, Goodwill and Purchased Intangible Assets - Additional Information 1 (Detail) (USD $)	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to purchased intangible assets	$ 8,090,000us-gaap_AmortizationOfIntangibleAssets	$ 8,082,000us-gaap_AmortizationOfIntangibleAssets	$ 4,057,000us-gaap_AmortizationOfIntangibleAssets
Amortization of future expenses, 2015	7,200,000
Amortization of future expenses, 2016	6,800,000
Amortization of future expenses, 2017	3,300,000
Amortization of future expenses, 2018	3,300,000
Amortization of future expenses, 2019	3,300,000
Amortization of future expenses, Thereafter	$ 3,400,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

-Publisher FASB

-Name Accounting Standards Codification

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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