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Acquisitions and Dispositions - Dispositions (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 21, 2017 | Jul. 01, 2017 | Jul. 02, 2016 | Jul. 01, 2017 | Jul. 02, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Net income (loss) |  | $ (217) | $ (1,990) | $ (2,704) | $ 3,854
Gain (loss) on sale of business |  |  |  | 1,631 | 0
Mueller-Xingrong [Member] | Disposed of by sale [Member] |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds from divestiture of interest in joint venture | $ 18,300 |  |  |  |
Assets disposed of | 56,700 |  |  |  |
Liabilities disposed of | 36,200 |  |  |  |
Cumulative translation gain as a result of sale | $ 3,800 |  |  |  |
Mueller-Xingrong [Member] |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Net sales |  |  |  | 67,300 | 69,600
Net income (loss) |  |  |  | $ (9) | $ 426

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- Definition Amount of foreign currency translation gain (loss) in the disposal group, including discontinued operation, recognized in the statement of income as a result of the sale or complete or substantially complete liquidation of an investment in a foreign entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 + Details
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