Summary of Results of Operations for Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 29, 2018		Sep. 30, 2017	[1]	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017	Jul. 01, 2017
Segment Reporting Information [Line Items]
Net sales	$ 713,331	[1]	$ 593,043		$ 1,966,259	$ 1,702,683
Income from operations	107,677	[1]	109,444		305,979	315,709
Depreciation and amortization expense	27,833	[1]	16,961		66,455	49,276
Capital Expenditures Net	8,344	[1]	12,144		32,552	42,434
Total assets	4,578,609				4,578,609		$ 3,339,713	$ 3,201,143
Commercial Foodservice Equipment Group [Member]
Segment Reporting Information [Line Items]
Net sales	471,598	[1]	354,828		1,245,619	1,000,830
Income from operations	102,091	[1]	89,028		284,645	264,576
Depreciation and amortization expense	17,558	[1]	6,977		32,907	20,455
Capital Expenditures Net	7,665	[1]	7,978		16,371	34,727
Total assets	2,907,387				2,907,387			1,559,757
Food Processing Group [Member]
Segment Reporting Information [Line Items]
Net sales	88,257	[1]	86,871		270,478	256,515
Income from operations	13,831	[1]	19,975		39,157	62,163
Depreciation and amortization expense	2,209	[1]	2,101		9,385	5,145
Capital Expenditures Net	318	[1]	484		7,274	2,430
Total assets	492,151				492,151			393,272
Residential Kitchen [Member]
Segment Reporting Information [Line Items]
Net sales	153,476	[1]	151,344		450,162	445,338
Income from operations	9,489	[1]	16,274		32,598	40,242
Depreciation and amortization expense	7,606	[1]	7,422		22,767	22,256
Capital Expenditures Net	1,779	[1]	2,813		9,421	5,756
Total assets	1,111,546				1,111,546			1,211,388
Corporate and Other
Segment Reporting Information [Line Items]
Net sales	0	[1],[2]	0	[2]	0	0
Income from operations	(17,734)	[1],[2]	(15,833)	[2]	(50,421)	(51,272)
Depreciation and amortization expense	460	[1],[2]	461	[2]	1,396	1,420
Capital Expenditures Net	(1,418)	[1],[2]	$ 869	[2]	(514)	$ (479)
Total assets	$ 67,525				$ 67,525			$ 36,726

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