Acquisitions and Dispositions (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended			9 Months Ended
	Apr. 26, 2016	Jun. 01, 2015	Oct. 01, 2016	Sep. 26, 2015	Jun. 27, 2015	Oct. 01, 2016	Sep. 26, 2015	Jul. 02, 2016	Dec. 26, 2015
Business Acquisition [Line Items]
Noncontrolling interests			$ 42,832			$ 42,832			$ 32,417
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale of property						5,301	$ 5,521
Pre-tax gain on sale of property			0	$ 0		$ 0	$ 15,376
DWV Ontario Manufacturing Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Lease-back term						22 months
Total sales price of property		$ 20,200
Cash proceeds from sale of property		$ 5,000
Payment to be received on December 30, 2016			5,000			$ 5,000
Payment to be received at end of Lease Period			$ 10,200			$ 10,200
Pre-tax gain on sale of property					$ 15,376
Amount of diluted share after tax (in dollars per share)					$ 0.17
Jungwoo Metal Ind. Co., LTD [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage	60.00%
Investments in joint venture	$ 20,500
Fair value of assets acquired	48,800
Fair value of assets acquired - property, plant and equipment	25,900
Fair value of assets acquired - inventories	15,800
Fair value of assets acquired - accounts receivables	5,600
Fair value of assets acquired - other current assets	1,500
Fair value of liabilities assumed	17,300
Fair value of liabilities assumed - long term debt	8,700
Fair value of liabilities assumed - accounts payable	7,300
Fair value of liabilities assumed - pension liabilities	800
Fair value of liabilities assumed - other current liabilities	500
Remaining purchase price allocated nontax-deductible goodwill	3,600
Noncontrolling interests	$ 14,600
Great Lakes Copper, Inc [Member]
Business Acquisition [Line Items]
Deferred tax liability								$ 4,100