Components of Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2013	Dec. 31, 2012
Line of Credit Facility [Line Items]
Long-term debt, Gross	$ 1,032,000	$ 1,025,000
Total long-term debt	980,688	965,280
Revolving Credit Facility
Line of Credit Facility [Line Items]
Senior Credit Facility	382,000
Term loan facility, at a rate of 2.75%, due 10/1/2014
Line of Credit Facility [Line Items]
Senior Credit Facility		375,000
3.875% Convertible Senior Subordinated Notes Due 2017
Line of Credit Facility [Line Items]
3.875% Convertible Senior Subordinated Notes due 2017	400,000	400,000
Less: Unamortized debt discount on 3.875% Convertible Senior Subordinated Notes due 2017	(51,312)	(59,720)
6.875% Senior Subordinated Notes Due 2019
Line of Credit Facility [Line Items]
6.875% Senior Subordinated Notes due 2019	$ 250,000	$ 250,000