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Acquisitions and Divestitures (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Jan. 29, 2016 | Dec. 29, 2018 | Sep. 29, 2018 | Dec. 30, 2017
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | $ 290,699 |  | $ 270,788 |  | $ 279,505
Loss on disposition of business | 23,000 |  |  |  |
Notes receivable | $ 10,000 |  |  |  |
Small Hearth Products Company |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 3,400 |
OFM |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Acquisition cost |  | $ 34,100 |  |  |
Goodwill |  | 14,000 |  |  |
Annual sales |  | 30,000 |  |  |
Intangible assets other than goodwill |  | $ 15,000 |  |  |
Minimum | OFM |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite-lived intangible asset useful life |  | 3 years |  |  |
Maximum | OFM |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite-lived intangible asset useful life |  | 10 years |  |  |

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