Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Noncontrolling Interest [Line Items]
Balance at December 26, 2015			$ 32,417
Purchase of Jungwoo-Mueller			14,562
Net income attributable to noncontrolling interests	$ 462	$ 211	497	$ 573
Other comprehensive loss attributable to noncontrolling interests, net of tax [Abstract]
Foreign currency translation			(1,359)
Balance at July 2, 2016	$ 46,117		$ 46,117

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Amount of increase in noncontrolling interest from a business combination.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to noncontrolling interests.

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