Summary of Results of Operations for Business Segments (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 26, 2020	Sep. 28, 2019		Sep. 26, 2020		Sep. 28, 2019		Dec. 28, 2019
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 634,525	$ 724,014		$ 1,783,961		$ 2,171,820
Income from operations	[1],[2]	86,672	121,345		231,204		362,013
Depreciation		9,805	9,476		28,503		28,014
Amortization of Intangible Assets and Debt Issuance Costs	[3]	17,579	17,661		53,091		49,258
Capital Expenditures Net		7,064	12,189		20,395		33,819
Total assets		5,020,184	4,928,528		5,020,184		4,928,528		$ 5,002,143
Commercial Foodservice Equipment Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		371,223	500,990		1,081,847		1,471,800
Income from operations	[1],[2]	57,483	105,099		173,064		313,482
Depreciation		5,360	5,413		15,567		15,714
Amortization of Intangible Assets and Debt Issuance Costs	[3]	12,923	12,230		38,257		34,519
Capital Expenditures Net		5,279	5,852		12,771		19,065
Total assets		3,155,360	3,162,315		3,155,360		3,162,315
Food Processing Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		110,648	89,147		316,477		279,474
Income from operations	[1],[2]	22,860	13,349		57,801		44,477
Depreciation		1,480	1,158		4,179		3,498
Amortization of Intangible Assets and Debt Issuance Costs	[3]	1,794	2,616		5,494		6,223
Capital Expenditures Net		692	3,212		3,115		5,289
Total assets		628,156	606,186		628,156		606,186
Residential Kitchen
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		152,654	133,877		385,637		420,546
Income from operations	[1],[2]	22,626	17,850		41,860		57,220
Depreciation		2,965	2,897		8,742		8,697
Amortization of Intangible Assets and Debt Issuance Costs	[3]	2,170	2,413		7,627		7,308
Capital Expenditures Net		794	3,125		4,089		7,061
Total assets		1,149,550	1,129,935		1,149,550		1,129,935
Corporate and Other
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0		0		0
Income from operations	[1],[2],[4]	(16,297)	(14,953)		(41,521)		(53,166)
Depreciation	[4]	0	8		15		105
Amortization of Intangible Assets and Debt Issuance Costs	[3],[4]	692	402		1,713		1,208
Capital Expenditures Net		299	0	[4]	420	[4]	2,404	[4]
Total assets	[4]	$ 87,118	$ 30,092		$ 87,118		$ 30,092

[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.

[2] Restructuring expenses are allocated in operating income by segment. See note 16 for further details.

[3] Includes amortization of deferred financing costs.

[4] Includes corporate and other general company assets and operations.