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Acquisitions and Dispositions, Acquisition (Details) - USD ($) $ in Thousands |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Apr. 26, 2016 | Jul. 31, 2015 | Jun. 18, 2015 | Mar. 30, 2015 | Feb. 28, 2014 | Dec. 31, 2016 | Dec. 26, 2015 | Dec. 27, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 50.00% |  |
Cash paid for acquisition |  |  |  |  |  |  | $ 20,533 | $ 105,944 | $ 30,137
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 123,993 | 120,252 | $ 102,909
Noncontrolling interests |  |  |  |  |  |  | $ 37,753 | $ 32,417 |
Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 20 years |  |
Non-compete Agreements [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 3 years |  |
Non-compete Agreements [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 5 years |  |
Patents and Technology [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 10 years |  |
Patents and Technology [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 15 years |  |
Trade Names and Licenses [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 5 years |  |
Trade Names and Licenses [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 10 years |  |
Other [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 2 years |  |
Other [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Intangible asset type [Abstract] |  |  |  |  |  |  |  |  |
Estimated Useful Life |  |  |  |  |  |  | 5 years |  |
Jungwoo Metal Ind. Co., LTD [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  | 60.00% |  |  |  |  |  |  |
Cash paid for acquisition |  | $ 20,500 |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |  |  |  |
Total consideration |  | 20,533 |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Accounts receivable |  | 5,551 |  |  |  |  |  |  |
Inventories |  | 17,616 |  |  |  |  |  |  |
Other current assets |  | 1,437 |  |  |  |  |  |  |
Property, plant, and equipment |  | 24,191 |  |  |  |  |  |  |
Goodwill | [1] | 442 |  |  |  |  |  |  |
Intangible assets |  | 756 |  |  |  |  |  |  |
Other assets |  | 58 |  |  |  |  |  |  |
Total assets acquired |  | 50,051 |  |  |  |  |  |  |
Accounts payable |  | 7,252 |  |  |  |  |  |  |
Accrued wages & other employee costs |  | 0 |  |  |  |  |  |  |
Other current liabilities |  | 577 |  |  |  |  |  |  |
Long-term debt |  | 8,659 |  |  |  |  |  |  |
Pension and other postretirement liabilities |  | 799 |  |  |  |  |  |  |
Other noncurrent liabilities |  | 582 |  |  |  |  |  |  |
Total liabilities assumed |  | 17,869 |  |  |  |  |  |  |
Noncontrolling interests |  | 11,649 |  |  |  |  |  |  |
Net assets acquired |  | 20,533 |  |  |  |  |  |  |
Jungwoo Metal Ind. Co., LTD [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  | 0 |  |  |  |  |  |  |
Jungwoo Metal Ind. Co., LTD [Member] | Non-compete Agreements [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  | 0 |  |  |  |  |  |  |
Jungwoo Metal Ind. Co., LTD [Member] | Patents and Technology [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  | 756 |  |  |  |  |  |  |
Jungwoo Metal Ind. Co., LTD [Member] | Trade Names and Licenses [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  | 0 |  |  |  |  |  |  |
Jungwoo Metal Ind. Co., LTD [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 0 |  |  |  |  |  |  |
Great Lakes Copper, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  | $ 70,000 |  |  |  |  |  |
Deferred tax liability |  |  |  |  |  |  | $ 4,100 |  |
Cost of acquisition, post-closing working capital adjustment |  |  | 1,500 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |  |  |  |
Total consideration |  |  | 70,011 |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Accounts receivable |  |  | 26,079 |  |  |  |  |  |
Inventories |  |  | 15,233 |  |  |  |  |  |
Other current assets |  |  | 22 |  |  |  |  |  |
Property, plant, and equipment |  |  | 22,771 |  |  |  |  |  |
Goodwill | [1] |  | 23,208 |  |  |  |  |  |
Intangible assets |  |  | 27,468 |  |  |  |  |  |
Other assets |  |  | 1,413 |  |  |  |  |  |
Total assets acquired |  |  | 116,194 |  |  |  |  |  |
Accounts payable |  |  | 36,026 |  |  |  |  |  |
Accrued wages & other employee costs |  |  | 0 |  |  |  |  |  |
Other current liabilities |  |  | 381 |  |  |  |  |  |
Long-term debt |  |  | 0 |  |  |  |  |  |
Pension and other postretirement liabilities |  |  | 5,655 |  |  |  |  |  |
Other noncurrent liabilities |  |  | 4,121 |  |  |  |  |  |
Total liabilities assumed |  |  | 46,183 |  |  |  |  |  |
Noncontrolling interests |  |  | 0 |  |  |  |  |  |
Net assets acquired |  |  | 70,011 |  |  |  |  |  |
Great Lakes Copper, Inc [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  | 20,273 |  |  |  |  |  |
Great Lakes Copper, Inc [Member] | Non-compete Agreements [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  | 2,269 |  |  |  |  |  |
Great Lakes Copper, Inc [Member] | Patents and Technology [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  | 3,104 |  |  |  |  |  |
Great Lakes Copper, Inc [Member] | Trade Names and Licenses [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  | 2,453 |  |  |  |  |  |
Great Lakes Copper, Inc [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  | $ (631) |  |  |  |  |  |
Sherwood Valve Products, LLC [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  | $ 21,800 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |  |  |  |
Total consideration |  |  |  | 21,795 |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  | 6,490 |  |  |  |  |
Inventories |  |  |  | 11,892 |  |  |  |  |
Other current assets |  |  |  | 260 |  |  |  |  |
Property, plant, and equipment |  |  |  | 10,327 |  |  |  |  |
Goodwill |  |  |  | 0 |  |  |  |  |
Intangible assets |  |  |  | (38) |  |  |  |  |
Other assets |  |  |  | 0 |  |  |  |  |
Total assets acquired |  |  |  | 28,931 |  |  |  |  |
Accounts payable |  |  |  | 6,022 |  |  |  |  |
Accrued wages & other employee costs |  |  |  | 471 |  |  |  |  |
Other current liabilities |  |  |  | 487 |  |  |  |  |
Long-term debt |  |  |  | 0 |  |  |  |  |
Pension and other postretirement liabilities |  |  |  | 0 |  |  |  |  |
Other noncurrent liabilities |  |  |  | 156 |  |  |  |  |
Total liabilities assumed |  |  |  | 7,136 |  |  |  |  |
Noncontrolling interests |  |  |  | 0 |  |  |  |  |
Net assets acquired |  |  |  | $ 21,795 |  |  |  |  |
Turbotec Products, Inc. [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  | $ 14,100 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  | 14,138 |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | 1,936 |  |  |  |
Inventories |  |  |  |  | 3,247 |  |  |  |
Other current assets |  |  |  |  | 72 |  |  |  |
Property, plant, and equipment |  |  |  |  | 9,080 |  |  |  |
Goodwill |  |  |  |  | 2,088 |  |  |  |
Intangible assets |  |  |  |  | 880 |  |  |  |
Other assets |  |  |  |  | 59 |  |  |  |
Total assets acquired |  |  |  |  | 17,362 |  |  |  |
Accounts payable |  |  |  |  | 1,603 |  |  |  |
Accrued wages & other employee costs |  |  |  |  | 356 |  |  |  |
Other current liabilities |  |  |  |  | 51 |  |  |  |
Long-term debt |  |  |  |  | 0 |  |  |  |
Pension and other postretirement liabilities |  |  |  |  | 0 |  |  |  |
Other noncurrent liabilities |  |  |  |  | 1,214 |  |  |  |
Total liabilities assumed |  |  |  |  | 3,224 |  |  |  |
Noncontrolling interests |  |  |  |  | 0 |  |  |  |
Net assets acquired |  |  |  |  | 14,138 |  |  |  |
Turbotec Products, Inc. [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 350 |  |  |  |
Turbotec Products, Inc. [Member] | Non-compete Agreements [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 90 |  |  |  |
Turbotec Products, Inc. [Member] | Patents and Technology [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 220 |  |  |  |
Turbotec Products, Inc. [Member] | Trade Names and Licenses [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 220 |  |  |  |
Turbotec Products, Inc. [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | $ 0 |  |  |  |
KME Yorkshire Limited [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  | $ 30,100 |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  | 30,137 |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  | 0 |  |  |
Inventories |  |  |  |  |  | 17,579 |  |  |
Other current assets |  |  |  |  |  | 1,034 |  |  |
Property, plant, and equipment |  |  |  |  |  | 2,103 |  |  |
Goodwill | [1] |  |  |  |  | 8,075 |  |  |
Intangible assets |  |  |  |  |  | 16,937 |  |  |
Other assets |  |  |  |  |  | 0 |  |  |
Total assets acquired |  |  |  |  |  | 45,728 |  |  |
Accounts payable |  |  |  |  |  | 10,188 |  |  |
Accrued wages & other employee costs |  |  |  |  |  | 1,167 |  |  |
Other current liabilities |  |  |  |  |  | 4,236 |  |  |
Long-term debt |  |  |  |  |  | 0 |  |  |
Pension and other postretirement liabilities |  |  |  |  |  | 0 |  |  |
Other noncurrent liabilities |  |  |  |  |  | 0 |  |  |
Total liabilities assumed |  |  |  |  |  | 15,591 |  |  |
Noncontrolling interests |  |  |  |  |  | 0 |  |  |
Net assets acquired |  |  |  |  |  | 30,137 |  |  |
KME Yorkshire Limited [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 10,699 |  |  |
KME Yorkshire Limited [Member] | Non-compete Agreements [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 4,504 |  |  |
KME Yorkshire Limited [Member] | Patents and Technology [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 0 |  |  |
KME Yorkshire Limited [Member] | Trade Names and Licenses [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 1,055 |  |  |
KME Yorkshire Limited [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Allocated to [Abstract] |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | $ 679 |  |  |
[1] | Tax-deductible goodwill

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