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Restructuring and Impairment Charges - Narrative (Details) $ in Millions | 12 Months Ended |
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Jan. 02, 2016 facility | Dec. 30, 2017 USD ($)
Restructuring and Related Activities [Abstract] |  |
Hearth manufacturing facility, held for sale | $ |  | $ 4.6
Number of facilities closed | facility | 3 |

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