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Acquisitions and Divestitures Narrative (Details) - USD ($) $ in Thousands	Sep. 21, 2018	Sep. 29, 2018	Dec. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 282,939	$ 279,505
Small Hearth Products Company
Business Acquisition [Line Items]
Purchase price	$ 3,000
Goodwill		$ 3,400

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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