Reconciliation of Debt Issuance Costs and Debt Discounts to the Net Carrying Value for Each Debt Obligation (Excluding Line of Credit Arrangements) (Detail) - USD ($) $ in Thousands	Oct. 06, 2018	Dec. 30, 2017	Sep. 28, 2016	Apr. 03, 2012
Debt Instrument [Line Items]
Face Value	$ 808,750	$ 812,500
Debt Issuance Costs and Debt Discount	6,437	7,414
Net Carrying Value	802,313	805,086
Other Notes Payable
Debt Instrument [Line Items]
Face Value	8,750	12,500
Debt Issuance Costs and Debt Discount	167	333
Net Carrying Value	8,583	12,167
2026 Notes
Debt Instrument [Line Items]
Face Value	400,000	400,000	$ 400,000
Debt Issuance Costs and Debt Discount	4,582	5,022
Net Carrying Value	395,418	394,978
2022 Notes
Debt Instrument [Line Items]
Face Value	400,000	400,000		$ 400,000
Debt Issuance Costs and Debt Discount	1,688	2,059
Net Carrying Value	$ 398,312	$ 397,941