Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Income Taxes [Line Items]
Unrecognized Tax Benefits	$ 0
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	200,000
Current:
Federal	54,982,000	58,903,000	21,491,000
State	10,368,000	13,461,000	4,356,000
Foreign	58,000	467,000	0
Current Income Tax Expense (Benefit)	65,408,000	72,831,000	25,847,000
Deferred:
Deferred Federal Income Tax Expense (Benefit)	10,015,000	26,233,000	256,000
Deferred State and Local Income Tax Expense (Benefit)	592,000	3,812,000	(3,000)
Federal and State	10,607,000	30,045,000	253,000
Income Tax Expense (Benefit), Continuing Operations	76,015,000	102,876,000	26,100,000
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Computed expected tax expense	72,375,000	95,303,000	24,620,000
State income taxes	7,124,000	11,226,000	2,959,000
Section 199 deduction	(4,830,000)	(5,306,000)	(2,079,000)
Change valuation allowance	254,000	1,000	(130,000)
Other, net	1,092,000	1,652,000	730,000
Deferred tax assets:
Loss contingency reserves	10,399,000	8,867,000
Employee benefits	5,074,000	3,380,000
Pension liability	19,734,000	19,000,000
Intangible assets amortization, including taxable goodwill	678,000	2,957,000
Other	15,721,000	10,992,000
Total gross deferred tax assets	51,606,000	45,196,000
Less valuation allowance	(300,000)	(46,000)
Net deferred tax assets	51,306,000	45,150,000
Deferred tax liabilities:
Intangible assets amortization, including taxable goodwill	(22,083,000)	(14,152,000)
Property, plant and equipment depreciation	(53,772,000)	(43,472,000)
Other	(9,457,000)	(11,194,000)
Total gross deferred tax liabilities	(85,312,000)	(68,818,000)
Current deferred tax asset	12,609,000	7,465,000
Non-current deferred tax liability	(46,615,000)	(31,133,000)
Deferred Tax Assets (Liabilities), Net	(34,006,000)	(23,668,000)
Operating Loss Carryforwards Limitation on Use Per Year	700,000
Internal Revenue Service (IRS) [Member]
Deferred tax liabilities:
Operating Loss Carryforwards	5,500,000
State and Local Jurisdiction [Member]
Deferred tax liabilities:
Tax Credit Carryforward, Amount	600,000
Foreign Tax Authority [Member]
Deferred tax liabilities:
Tax Credit Carryforward, Amount	$ 300,000
Minimum [Member]
Income Taxes [Line Items]
Likelihood Of Tax Benefit Being Realized In Earning Upon Settlement, Percent	50.00%