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Fair Value Measurements (Additional Fair Value Information Relating To The Company's Financial Instruments Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 02, 2015	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 148,000	$ 147,227	$ 157,771	$ 154,621
Cash and Cash Equivalents, Fair Value Disclosure	148,000	147,227
Notes Payable, Noncurrent	400,000us-gaap_LongTermNotesPayable	0us-gaap_LongTermNotesPayable
Notes Payable, Fair Value Disclosure	396,856us-gaap_NotesPayableFairValueDisclosure	0us-gaap_NotesPayableFairValueDisclosure
Non-current portion	674,015us-gaap_LongTermDebtNoncurrent	652,056us-gaap_LongTermDebtNoncurrent
Credit Facility	738,446us-gaap_LongTermDebt	758,458us-gaap_LongTermDebt
Revolving Credit Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	277,000	687,000
Non-current portion		687,000
Credit Facility	277,000
Promissory Notes And Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-current portion	7,590	8,458
Credit Facility	7,590	8,458
Debt Instrument, Fair Value Disclosure	7,590	8,458
Uncommitted Facilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Debt	57,000	63,000
Short-term Debt, Fair Value	57,000	63,000
Credit Facility	$ 57,000	$ 63,000