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Acquisitions and Dispositions - Disposition (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 28, 2017 | Jun. 21, 2017 | Dec. 30, 2016 | Jun. 01, 2015 | Dec. 26, 2015 | Jun. 27, 2015 | Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Net (loss) income |  |  |  |  | $ (8,100) |  | $ (4,153) | $ 3,720 |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  | 1,491 | 0 | $ 15,376
Proceeds from sale of assets, net of cash transferred |  |  |  |  |  |  | 31,564 | 10,304 | 5,538
Mueller-Xingrong [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  | 50.50% |  |  |  |  |  |  |
Net sales of equity method investment |  |  |  |  |  |  | 67,300 | 121,500 | 155,900
Net (loss) income |  |  |  |  |  |  | (9) | $ 62 | $ 555
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 |  |  |  |  |
Proceeds from sale of assets, net of cash transferred | $ 10,200 |  | $ 5,000 | 5,000 |  |  |  |  |
Gain on sale of manufacturing assets |  |  |  |  |  | $ 15,400 |  |  |
Amount of diluted share after tax (in dollars per share) |  |  |  |  |  | $ 0.17 |  |  |
Carrying value of assets disposed |  |  |  | 2,300 |  |  |  |  |
Goodwill allocated to disposal group |  |  |  | $ 2,400 |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Mueller-Xingrong [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of interest |  | $ 18,300 |  |  |  |  |  |  |
Assets |  | 56,800 |  |  |  |  |  |  |
Carrying value of the liabilities disposed |  | 36,200 |  |  |  |  |  |  |
Cumulative translation loss |  | $ 3,800 |  |  |  |  |  |  |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  | $ 1,500 |  |

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- Definition The amount of after-tax gain (loss) on the sale of property for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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