Acquisitions - Narrative (Details) - USD ($) $ in Thousands					5 Months Ended	12 Months Ended
	Aug. 03, 2020	Jan. 17, 2020	Jul. 02, 2018	Mar. 31, 2018	Dec. 26, 2020	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Business Acquisition [Line Items]
Cash paid for acquisition						$ 72,648	$ (3,465)	$ 167,677
Wieland-Kessler LLC Asset Acquisition [Member]
Business Acquisition [Line Items]
Asset acquisition, cash paid	$ 57,200
Asset acquisition, revenue from acquiree					$ 55,000
Total consideration paid	57,233
Net assets acquired	$ 57,233
Shoals Tubular, Inc. [Member]
Business Acquisition [Line Items]
Total consideration paid		$ 15,415
Net assets acquired		$ 15,415
ATCO Rubber Product [Member]
Business Acquisition [Line Items]
Total consideration paid			$ 158,100
Cash paid for acquisition			151,800
Contingent consideration, range of outcomes, high			12,000
Revenues of acquired company						$ 196,500	$ 190,100
Net sales since acquisition								$ 90,000
Net assets acquired			$ 158,100
Die-Mold [Member]
Business Acquisition [Line Items]
Total consideration paid				$ 13,629
Contingent consideration, range of outcomes, high				2,300
Net assets acquired				13,629
Cash paid for acquisition				$ 12,400