Acquisitions and Dispositions - Schedule of Recognized Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 02, 2018	Mar. 31, 2018	May 31, 2017	Apr. 26, 2016	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Jul. 31, 2015	Mar. 30, 2015	Feb. 28, 2014
Business Acquisition [Line Items]
Goodwill					$ 150,335	$ 130,293	$ 123,993
Noncontrolling interests					$ 14,904	$ 13,917
ATCO Rubber Product [Member]
Business Acquisition [Line Items]
Total consideration	$ 156,704
Accounts receivable	21,829
Inventories	31,666
Other current assets	1,051
Property, plant, and equipment	83,080
Goodwill	17,770
Intangible assets	21,430			$ 21,430
Other assets	224
Total assets acquired	177,050
Accounts payable	8,093
Other current liabilities	10,187
Long-term debt	2,066
Pension and other postretirement liabilities	0
Other noncurrent liabilities	0
Total liabilities assumed	20,346
Noncontrolling interests	$ 0
Die-Mold [Member]
Business Acquisition [Line Items]
Total consideration		$ 13,629
Accounts receivable		1,684
Inventories		1,833
Other current assets		267
Property, plant, and equipment		3,278
Goodwill		2,241
Intangible assets		5,209						$ 5,209
Other assets		0
Total assets acquired		14,512
Accounts payable		710
Other current liabilities		173
Long-term debt		0
Pension and other postretirement liabilities		0
Other noncurrent liabilities		0
Total liabilities assumed		883
Noncontrolling interests		0
Net assets acquired		$ 13,629
Heatlink Group [Member]
Business Acquisition [Line Items]
Total consideration			$ 17,164
Accounts receivable			2,809
Inventories			4,648
Other current assets			508
Property, plant, and equipment			2,024
Goodwill			6,879
Intangible assets			6,413						$ 6,413
Other assets			0
Total assets acquired			23,281
Accounts payable			3,633
Other current liabilities			593
Long-term debt			0
Pension and other postretirement liabilities			0
Other noncurrent liabilities			1,891
Total liabilities assumed			6,117
Noncontrolling interests			0
Net assets acquired			$ 17,164
Jungwoo-Mueller [Member]
Business Acquisition [Line Items]
Total consideration				20,533
Accounts receivable				5,551
Inventories				17,616
Other current assets				1,437
Property, plant, and equipment				24,191
Goodwill				223
Intangible assets				756						$ 756
Other assets				277
Total assets acquired				50,051
Accounts payable				7,252
Other current liabilities				577
Long-term debt				8,659
Pension and other postretirement liabilities				799
Other noncurrent liabilities				582
Total liabilities assumed				17,869
Noncontrolling interests				11,649
Net assets acquired				$ 20,533