Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Domestic	$ 262,220,000	$ 105,945,000	$ 118,208,000
Foreign	9,178,000	14,409,000	11,953,000
Income before income taxes	271,398,000	120,354,000	130,161,000
Current tax expense [Abstract]
Federal	69,565,000	33,152,000	43,127,000
Foreign	2,608,000	1,764,000	1,740,000
State and local	6,723,000	3,049,000	2,398,000
Current tax expense	78,896,000	37,965,000	47,265,000
Deferred tax expense (benefit) [Abstract]
Federal	17,694,000	570,000	(6,480,000)
Foreign	(376,000)	(2,015,000)	344,000
State and local	1,895,000	161,000	1,946,000
Deferred tax expense (benefit)	19,213,000	(1,284,000)	(4,190,000)
Income tax expense	98,109,000	36,681,000	43,075,000
Undistributed earnings of foreign subsidiaries	100,000,000
Income Tax Reconciliation [Abstract]
Expected income tax expense	94,989,000	42,124,000	45,556,000
State and local income tax, net of federal benefit	6,405,000	3,178,000	4,267,000
Effect of foreign statutory rate different from U.S. and other foreign adjustments	(1,026,000)	(2,637,000)	(560,000)
Valuation allowance changes	0	(1,224,000)	(443,000)
U.S. production activities deduction	(4,445,000)	(2,975,000)	(3,850,000)
Goodwill disposition	1,790,000	0	0
Tax contingency changes	(140,000)	(3,224,000)	(1,934,000)
Other, net	536,000	1,439,000	39,000
Income tax expense	98,109,000	36,681,000	43,075,000
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
Unrecognized Tax Benefits Reconciliation [Roll Forward]
Beginning balance	3,259,000	6,572,000
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	0
Decreases related to settlements with taxing authorities	(431,000)	0
Decreases due to lapses in the statute of limitations	0	(3,313,000)
Ending balance	2,828,000	3,259,000	6,572,000
Unrecognized tax benefits that would impact effective tax rate		0
Credit to income tax expense related to penalties and interest			500,000
Deferred tax assets [Abstract]
Accounts receivable	490,000	447,000
Inventories	11,136,000	7,829,000
Other postretirement benefits and accrued items	13,548,000	14,767,000
Pension	0	10,489,000
Other reserves	12,441,000	14,905,000
Federal and foreign tax attributes	5,913,000	9,829,000
State tax attributes, net of federal benefit	24,663,000	29,880,000
Insurance Claim Receivable	0	8,048,000
Share-based Compensation	2,486,000	1,493,000
Total deferred tax assets	70,677,000	97,687,000
Less valuation allowance	(22,544,000)	(30,394,000)
Deferred tax assets, net of valuation allowance	48,133,000	67,293,000
Deferred tax liabilities [Abstract]
Property, plant, and equipment	60,425,000	49,531,000
Pension	4,507,000	0
Other	2,209,000	983,000
Total deferred tax liabilities	67,141,000	50,514,000
Net deferred tax (liability) asset	(19,008,000)	16,779,000
State income tax credit carryforwards	2,000,000
Other state income tax credit carryforwards	11,900,000
State net operating loss carryforwards with potential tax benefits	10,700,000
State tax credit and NOL carryforwards offset by valuation allowances	19,400,000
Federal and foreign tax attributes with potential tax benefits	5,900,000
Federal and foreign tax attributes with potential tax benefits with unlimited life	4,500,000
Federal and foreign tax attributes with potential tax benefits with expiration	1,400,000
Valuation allowances	3,200,000
Income taxes paid	$ 80,100,000	$ 38,400,000	$ 45,900,000