Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Income Taxes [Abstract]
Domestic	$ 105,945,000	$ 118,208,000	$ 88,262,000
Foreign	14,409,000	11,953,000	33,588,000
Income before income taxes	120,354,000	130,161,000	121,850,000
Current tax expense [Abstract]
Federal	33,152,000	43,127,000	32,132,000
Foreign	1,764,000	1,740,000	6,292,000
State and local	3,049,000	2,398,000	2,518,000
Current tax expense	37,965,000	47,265,000	40,942,000
Deferred tax (benefit) expense [Abstract]
Federal	570,000	(6,480,000)	(4,057,000)
Foreign	(2,015,000)	344,000	(2,036,000)
State and local	161,000	1,946,000	(534,000)
Deferred tax benefit	(1,284,000)	(4,190,000)	(6,627,000)
Income tax expense	36,681,000	43,075,000	34,315,000
Income Tax Reconciliation [Abstract]
Expected income tax expense	42,124,000	45,556,000	42,647,000
State and local income tax, net of federal benefit	3,178,000	4,267,000	2,867,000
Effect of foreign statutory rate different from U.S. and other foreign adjustments	(2,637,000)	(560,000)	(2,143,000)
Valuation allowance changes	(1,224,000)	(443,000)	(5,496,000)
U.S. production activities deduction	(2,975,000)	(3,850,000)	(2,975,000)
Tax contingency changes	(3,224,000)	(1,934,000)	(1,516,000)
Other, net	1,439,000	39,000	931,000
Income tax expense	36,681,000	43,075,000	34,315,000
Additional valuation allowance releases, State tax attributes	1,200,000	400,000
Additional valuation allowance per diluted share, State tax attributes (in dollars per share)	$ 0.03	$ 0.01
Deferred tax asset valuation allowance released			5,500,000
Valuation allowance per diluted share (in dollars per share)			$ 0.15
Additional valuation allowance releases			1,100,000
Additional valuation allowance releases per diluted share (in dollars per share)			$ 0.03
Valuation allowance added to offset foreign deferred tax asset			1,100,000
Valuation allowance to offset foreign deferred tax asset per diluted share (in dollars per share)			$ 0.03
Unrecognized Tax Benefits Reconciliation [Roll Forward]
Beginning balance	6,572,000	8,565,000
Increases related to prior year tax positions	0	0
Increases related to current year tax positions	0	0
Decreases related to prior year tax positions	0	(802,000)
Decreases related to settlements with taxing authorities	0	0
Decreases due to lapses in the statute of limitations	(3,313,000)	(1,191,000)
Ending balance	3,259,000	6,572,000	8,565,000
Deferred tax asset associated with tax uncertainties	200,000
Unrecognized tax benefits, accrued interest	200,000
Unrecognized tax benefits that would impact effective tax rate	600,000
Unrecognized tax benefits decreases resulting from current period tax positions	600,000
Cumulative potential interest and penalties accrued related to unrecognized tax benefits	200,000	200,000
Credit to income tax expense related to penalties and interest		500,000	200,000
Audit settlements tax expense			2,000,000
Audit settlements tax expense per diluted share (in dollars per share)			$ 0.05
Deferred tax assets [Abstract]
Accounts receivable	447,000	424,000
Inventories	7,829,000	11,075,000
Other postretirement benefits and accrued items	14,767,000	13,880,000
Pension	10,489,000	10,673,000
Other reserves	14,905,000	14,671,000
Federal and foreign tax attributes	9,829,000	7,421,000
State tax attributes, net of federal benefit	29,880,000	30,478,000
Insurance Claim Receivable	8,048,000	244,000
Share-based Compensation	1,493,000	2,052,000
Total deferred tax assets	97,687,000	90,918,000
Less valuation allowance	(30,394,000)	(29,705,000)
Deferred tax assets, net of valuation allowance	67,293,000	61,213,000
Deferred tax liabilities [Abstract]
Property, plant, and equipment	49,531,000	44,757,000
Other	983,000	893,000
Total deferred tax liabilities	50,514,000	45,650,000
Net deferred tax asset	16,779,000	15,563,000
State income tax credit carryforwards	900,000
Other state income tax credit carryforwards	13,200,000
State net operating loss carryforwards with potential tax benefits	15,800,000
State tax credit and NOL carryforwards offset by valuation allowances	23,100,000
Federal and foreign tax attributes with potential tax benefits	9,800,000
Federal and foreign tax attributes with potential tax benefits with unlimited life	4,600,000
Federal and foreign tax attributes with potential tax benefits with expiration	5,200,000
Valuation allowances	7,300,000
Income taxes paid	$ 38,400,000	$ 45,900,000	$ 46,000,000