Acquisitions and Dispositions - Acquisitions Narrative (Details) - USD ($) $ in Thousands					12 Months Ended
	Jul. 02, 2018	Mar. 31, 2018	May 31, 2017	Apr. 26, 2016	Dec. 29, 2018	Dec. 30, 2017		Dec. 31, 2016	[1]
Business Acquisition [Line Items]
Cash paid for acquisition					$ 167,677	$ 18,396	[1]	$ 20,533
ATCO Rubber Product [Member]
Business Acquisition [Line Items]
Total consideration paid	$ 156,704
Cash paid for acquisition	151,400
Contingent consideration, range of outcomes, high	12,000
Revenues of acquired company	166,000				$ 90,000
Deferred tax liability recognized	$ 0
Die-Mold [Member]
Business Acquisition [Line Items]
Net assets acquired		$ 13,629
Total consideration paid		13,629
Cash paid for acquisition		12,400
Contingent consideration, range of outcomes, high		2,300
Deferred tax liability recognized		$ 0
Heatlink Group [Member]
Business Acquisition [Line Items]
Net assets acquired			$ 17,164
Total consideration paid			17,164
Contingent consideration, range of outcomes, high			2,200
Cash paid for acquisition			16,300
Contingent consideration liability						$ 900
Deferred tax liability recognized			$ 1,891
Jungwoo-Mueller [Member]
Business Acquisition [Line Items]
Net assets acquired				$ 20,533
Total consideration paid				20,533
Cash paid for acquisition				$ 20,500
Equity method investment, ownership percentage				60.00%
Deferred tax liability recognized				$ 582

[1] The Consolidated Statements of Cash Flows for prior periods have been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Consolidated Statements of Cash Flows reflect the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown. Refer to Note 1 for further discussion.