Summary of Results of Operations for Business Segments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 28, 2020	Mar. 30, 2019	Dec. 28, 2019
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 677,459	$ 686,802
Income from operations	[1],[2]	105,414	101,061
Depreciation		9,230	9,016
Amortization of Intangible Assets and Debt Issuance Costs	[3]	17,369	16,498
Capital Expenditures Net		9,181	8,095
Total assets		5,277,979	4,688,117	$ 5,002,143
Commercial Foodservice Equipment Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		443,124	457,531
Income from operations	[1],[2]	88,607	96,811
Depreciation		4,900	4,919
Amortization of Intangible Assets and Debt Issuance Costs	[3]	12,440	11,261
Capital Expenditures Net		4,686	5,973
Total assets		3,232,632	2,970,850
Food Processing Group
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		104,266	92,474
Income from operations	[1],[2]	15,358	12,586
Depreciation		1,336	1,141
Amortization of Intangible Assets and Debt Issuance Costs	[3]	1,700	2,383
Capital Expenditures Net		1,829	701
Total assets		626,907	530,440
Residential Kitchen
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		130,069	136,797
Income from operations	[1],[2]	12,708	18,771
Depreciation		2,983	2,908
Amortization of Intangible Assets and Debt Issuance Costs	[3]	2,720	2,451
Capital Expenditures Net		2,545	1,421
Total assets		1,145,943	1,156,191
Corporate and Other
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0
Income from operations	[1],[2],[4]	(11,259)	(27,107)
Depreciation	[4]	11	48
Amortization of Intangible Assets and Debt Issuance Costs	[3]	509	403
Capital Expenditures Net	[4]	121	0
Total assets	[4]	$ 272,497	$ 30,636

[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.