Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2018		Jul. 01, 2017		Jun. 30, 2018	Jul. 01, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 668,128	[1]	$ 579,343	[1]	$ 1,252,928	$ 1,109,640
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	452,249		399,445		852,857	764,650
Asia
Disaggregation of Revenue [Line Items]
Net sales	51,742		41,568		88,005	80,779
Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	145,974		116,986		276,372	226,944
Latin America
Disaggregation of Revenue [Line Items]
Net sales	18,163		21,344		35,694	37,267
Commercial Foodservice Equipment Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	414,117	[1]	333,753	[1]	774,021	646,002
Commercial Foodservice Equipment Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	289,523		239,159		544,636	463,781
Commercial Foodservice Equipment Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	37,959		33,593		66,991	65,843
Commercial Foodservice Equipment Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	75,352		50,802		141,963	97,295
Commercial Foodservice Equipment Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	11,283		10,199		20,431	19,083
Residential Kitchen [Member]
Disaggregation of Revenue [Line Items]
Net sales	160,362	[1]	153,222	[1]	296,686	293,994
Residential Kitchen [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	103,420		92,355		181,980	173,193
Residential Kitchen [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	2,060		1,999		3,579	4,537
Residential Kitchen [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	53,819		56,813		108,874	113,160
Residential Kitchen [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	1,063		2,055		2,253	3,104
Food Processing Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	93,649	[1]	92,368	[1]	182,221	169,644
Food Processing Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	59,306		67,931		126,241	127,676
Food Processing Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	11,723		5,976		17,435	10,399
Food Processing Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	16,803		9,371		25,535	16,489
Food Processing Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 5,817		$ 9,090		$ 13,010	$ 15,080

[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.