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Supplemental Disclosure of Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Cash paid during period:
Income taxes			$ 17,027	$ 16,026
Non-cash investing and financing activities:
Unrealized loss on short-term investments	(3)	(17)	(25)	(5)
Vested stock unit awards issued to settle accrued bonuses			$ 5,807	$ 5,343

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Vested Restricted Stock Awards Issued to Settle Accrued Bonuses

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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

-Publisher FASB

-Name Accounting Standards Codification

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