Summary of Results of Operations for Business Segments (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 27, 2020	Jun. 29, 2019		Jun. 27, 2020		Jun. 29, 2019		Dec. 28, 2019
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 471,977	$ 761,004		$ 1,149,436		$ 1,447,806
Income from operations	[1],[2]	39,118	139,607		144,532		240,668
Depreciation		9,468	9,522		18,698		18,538
Amortization of Intangible Assets and Debt Issuance Costs	[3]	18,143	15,099		35,512		31,597
Capital Expenditures Net		4,150	13,535		13,331		21,630
Total assets		5,414,701	4,886,669		5,414,701		4,886,669		$ 5,002,143
Commercial Foodservice Equipment Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		267,500	513,279		710,624		970,810
Income from operations	[1],[2]	26,974	111,572		115,581		208,383
Depreciation		5,307	5,382		10,207		10,301
Amortization of Intangible Assets and Debt Issuance Costs	[3]	12,894	11,028		25,334		22,289
Capital Expenditures Net		2,806	7,240		7,492		13,213
Total assets		3,149,853	3,190,584		3,149,853		3,190,584
Food Processing Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		101,563	97,853		205,829		190,327
Income from operations	[1],[2]	19,583	18,542		34,941		31,128
Depreciation		1,363	1,199		2,699		2,340
Amortization of Intangible Assets and Debt Issuance Costs	[3]	2,000	1,224		3,700		3,607
Capital Expenditures Net		594	1,376		2,423		2,077
Total assets		617,638	528,008		617,638		528,008
Residential Kitchen
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		102,914	149,872		232,983		286,669
Income from operations	[1],[2]	6,526	20,599		19,234		39,370
Depreciation		2,794	2,892		5,777		5,800
Amortization of Intangible Assets and Debt Issuance Costs	[3]	2,737	2,444		5,457		4,895
Capital Expenditures Net		750	2,515		3,295		3,936
Total assets		1,119,685	1,136,859		1,119,685		1,136,859
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]	(13,965)	(11,106)		(25,224)		(38,213)
Depreciation	[4]	4	49		15		97
Amortization of Intangible Assets and Debt Issuance Costs	[3],[4]	512	403		1,021		806
Capital Expenditures Net		0	2,404	[4]	121	[4]	2,404	[4]
Total assets	[4]	$ 527,525	$ 31,218		$ 527,525		$ 31,218

[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.