Employee Benefits (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Dec. 28, 2013	Mar. 30, 2014 Multiemployer Pension Plan [Member]	Sep. 30, 2012 Multiemployer Pension Plan [Member]	Mar. 31, 2012 Multiemployer Pension Plan [Member]	Mar. 30, 2014 Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution in the current fiscal year							$ 18,000,000
Company contribution to defined benefit pension plan							6,600,000
Multiemployer Plan Withdrawal Liability				24,800,000		18,000,000
Multiemployer Plan Full Withdrawal Expense Payment Period				20 years
Multiemployer Plan Full Withdrawal Expense					7,000,000
Payment Related To Multiemployer Plan				500,000
Multiemployer Principle Payment				200,000
Other long-term assets	25,465,000		25,369,000
Other long-term liabilities	37,347,000		36,243,000	24,000,000
Interest expense	12,320,000	14,961,000		300,000
Other Liabilities, Current				$ 800,000