Investments in Unconsolidated Affiliates - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		54 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020
Schedule of Equity Method Investments [Line Items]
Net loss	$ 28,487	$ 28,676	$ 62,438	$ 45,815
Tecumseh Products Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Net loss	$ (8,600)	(5,300)	$ (15,000)	(19,900)
Second Unconsolidated Affiliate [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Mueller Middle East [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	40.00%		40.00%		40.00%
Net loss		$ (600)	$ 200	$ (1,400)
Cash invested to acquire joint venture interest					$ 5,000