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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This element represents the recognized expense for the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties or, if not recognizing the expense in the period in which the tax return was initially filed, the expense is generally recognized in the period in which the enterprise's judgment about meeting the minimum statutory threshold changes.

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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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- Definition

This element represents interest expense recognized 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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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010	Jan. 01, 2011
Significant Accounting Policies [Line Items]
Non-cash share-based compensation expense	$ 5,300,000	$ 4,200,000	$ 7,349,000	$ 7,372,000
Unrecognized tax benefits related to federal, state and foreign taxes					17,800,000
Unrecognized tax benefits related to federal, state and foreign taxes of which would impact the effective tax rate if recognized					15,900,000
Unrecognized tax benefits, accrued interest					2,100,000
Unrecognized tax benefits, penalties					2,400,000
Unrecognized tax benefits, interest recognized	100,000	(100,000)
Unrecognized tax benefits, penalties recognized	$ 100,000	$ 100,000