Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 29, 2018		Sep. 30, 2017		Sep. 29, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 713,331	[1]	$ 593,043	[1]	$ 1,966,259	$ 1,702,683
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	474,333		394,666		1,327,190	1,159,316
Asia
Disaggregation of Revenue [Line Items]
Net sales	59,113		45,376		147,118	126,155
Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	154,893		131,707		431,265	358,651
Latin America
Disaggregation of Revenue [Line Items]
Net sales	24,992		21,294		60,686	58,561
Commercial Foodservice Equipment Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	471,598	[1]	354,828	[1]	1,245,619	1,000,830
Commercial Foodservice Equipment Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	318,962		243,233		863,598	707,014
Commercial Foodservice Equipment Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	50,996		38,755		117,987	104,598
Commercial Foodservice Equipment Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	83,763		61,327		225,726	158,622
Commercial Foodservice Equipment Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	17,877		11,513		38,308	30,596
Residential Kitchen [Member]
Disaggregation of Revenue [Line Items]
Net sales	153,476	[1]	151,344	[1]	450,162	445,338
Residential Kitchen [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	98,136		89,821		280,116	263,014
Residential Kitchen [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	1,653		2,078		5,232	6,615
Residential Kitchen [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	51,936		57,774		160,810	170,934
Residential Kitchen [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	1,751		1,671		4,004	4,775
Food Processing Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	88,257	[1]	86,871	[1]	270,478	256,515
Food Processing Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	57,235		61,612		183,476	189,288
Food Processing Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	6,464		4,543		23,899	14,942
Food Processing Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	19,194		12,606		44,729	29,095
Food Processing Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 5,364		$ 8,110		$ 18,374	$ 23,190

[1] Non-operating expenses are not allocated to the operating segments. Non-operating expenses consist of interest expense and deferred financing amortization, foreign exchange gains and losses and other income and expense items outside of income from operations.