Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Commitments And Contingencies Disclosure [Line Items]
Rental expense	$ 22.8	$ 21.7	$ 21.0
Rental expenses related to discontinued operations	$ 2.6	$ 3.2	$ 3.0

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration