Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 25, 2011	Sep. 26, 2010
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization expense	$ 7,721	$ 7,664	$ 23,881	$ 23,706
Customer Relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, minimum useful life (in years)	5
Intangible assets, maximum useful life (in years)	25
Other
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, minimum useful life (in years)	4
Intangible assets, maximum useful life (in years)	21