Income Taxes (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Income Taxes [Abstract]
Domestic	$ 103,576	$ 121,614	$ 135,445
Foreign	42,454	10,175	12,568
Income before income taxes	146,030	131,789	148,013
Current tax expense [Abstract]
Federal	32,262	50,272	45,723
Foreign	5,667	4,042	2,346
State and local	3,210	4,886	3,905
Current tax expense	41,139	59,200	51,974
Deferred tax expense (benefit) [Abstract]
Federal	2,004	(13,739)	(2,469)
Foreign	5,099	(1,180)	890
State and local	(105)	(899)	(4,916)
Deferred tax (benefit) expense	6,998	(15,818)	(6,495)
Income tax expense	48,137	43,382	45,479
Undistributed earnings of foreign subsidiaries	118,800
Income Tax Reconciliation [Abstract]
Expected income tax expense	51,110	46,126	51,805
State and local income tax, net of federal benefit	1,982	2,673	3,355
Effect of foreign statutory rate different from U.S. and other foreign adjustments	(4,092)	(654)	(1,094)
Valuation allowance changes	0	0	(5,732)
U.S. production activities deduction	(3,063)	(3,500)	(4,025)
Goodwill disposition	0	646	0
Investment in unconsolidated affiliates	1,030	0	0
Permanent adjustment to deferred tax liabilities	0	(4,218)	0
Other, net	1,170	2,309	1,170
Income tax expense	48,137	43,382	45,479
Unrecognized tax benefits that would impact effective tax rate	0	$ 0	$ 0
Permanent adjustment to deferred tax liabilities (in dollars per share)		$ 0.07
Additional valuation allowance per diluted share, State tax attributes (in dollars per share)			$ 0.10
Deferred tax assets [Abstract]
Inventories	15,483	$ 14,802
Other postretirement benefits and accrued items	13,180	15,294
Pension	0	2,349
Other reserves	9,821	9,823
Federal and foreign tax attributes	5,813	7,403
State tax attributes, net of federal benefit	22,572	21,716
Share-based compensation	2,416	3,397
Basis difference in unconsolidated affiliates	211	0
Total deferred tax assets	69,496	74,784
Less valuation allowance	(18,681)	(17,650)
Deferred tax assets, net of valuation allowance	50,815	57,134
Deferred tax liabilities [Abstract]
Property, plant, and equipment	52,319	43,592
Pension	4,633	0
Other	0	1,546
Total deferred tax liabilities	56,952	45,138
Net deferred tax liability	(6,137)
Net deferred tax asset		11,996
State income tax credit carryforwards with expiration	3,200
Other state income tax credit carryforwards with unlimited life	10,200
State net operating loss carryforwards with potential tax benefits	9,300
Valuation allowances	12,500
Federal and foreign tax attributes with potential tax benefits	5,600
Valuation allowances	4,900
Income taxes paid	$ 40,100	$ 49,900	$ 47,300