Restructuring Costs (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 27, 2019	Mar. 27, 2020
Restructuring And Related Activities [Abstract]
Restructuring Costs	$ 3,300
Remaining restructuring commitments	$ 1,584	$ 526

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Period Type:	duration