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	Dec. 30, 2017	Dec. 31, 2016	Sep. 28, 2016	Apr. 03, 2012
Debt Instrument [Line Items]
Face Value	$ 812,500	$ 817,500
Debt issuance costs and debt discount	7,414	8,770
Net carrying value	805,086	808,730
2026 Notes
Debt Instrument [Line Items]
Face Value	400,000	400,000	$ 400,000
Debt issuance costs and debt discount	5,022	5,594
Net carrying value	394,978	394,406
2022 Notes
Debt Instrument [Line Items]
Face Value	400,000	400,000		$ 400,000
Debt issuance costs and debt discount	2,059	2,542
Net carrying value	397,941	397,458
Other Notes Payable
Debt Instrument [Line Items]
Face Value	12,500	17,500
Debt issuance costs and debt discount	333	634
Net carrying value	$ 12,167	$ 16,866