Summary of Significant Accounting Policies Additional Information (Detail) (USD $)	3 Months Ended
Mar. 30, 2013	Mar. 31, 2012
Significant Accounting Policies [Line Items]
Non-cash share-based compensation expense	$ 2,965,000	$ 2,747,000
Unrecognized tax benefits related to federal, state and foreign taxes		12,100,000
Unrecognized tax benefits related to federal, state and foreign taxes of which would impact the effective tax rate if recognized		10,400,000
Unrecognized tax benefits, accrued interest		1,600,000
Unrecognized tax benefits, penalties		1,600,000
Amount of unrecognized tax benefits that may be recognized over the next twelve months	800,000
Interest paid	3,100,000	1,900,000
Income tax payments	$ 8,400,000	$ 10,500,000

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

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This element represents the amount of statutory penalties accrued as of the date of the statement of financial position for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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- Definition

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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