Income Taxes (Significant Portions Of The Deferred Tax Assets And Deferred Tax Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Reserves for employee compensation, deductible when paid for income tax purposes, accrued for financial reporting purposes	$ 13,022	$ 16,562
Reserves for insurance claims, deductible when paid for income tax purposes, accrued for financial reporting purposes	4,716	2,495
Other reserves, deductible when paid for income tax purposes, accrued for financial reporting purposes	3,626	4,361
Unrealized losses, deductible when realized for income tax purposes, included in other comprehensive income	552	334
Basis difference in fixed rate debt	2,474	2,814
Basis difference in noncurrent investments	2,289	1,485
Inventories, principally due to additional costs capitalized for income tax purposes	3,085	2,218
Net state and foreign operating loss and tax credit carryforwards	4,855	4,023
Total gross deferred tax assets	34,619	34,292
Less valuation allowance	(485)	(408)
Net deferred tax assets	34,134	33,884
Fixed assets, principally due to differences in depreciation, net of impairment reserves	(59,515)	(78,714)
Deferred Tax Liabilities, Goodwill and Intangible Assets	135,841	126,762
Deferred Tax Liabilities, Inventory	647	1,827
Prepaid expenses and other costs deductible for tax, amortized for financial reporting purposes	(2,543)	(1,783)
Deferred Tax Liabilities, Gross	198,546	209,086
Total gross deferred tax liabilities	$ 164,412	$ 175,202