Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 584,800	$ 530,297
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	400,608	365,205
Asia
Disaggregation of Revenue [Line Items]
Net sales	36,263	39,211
Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	130,398	109,958
Latin America
Disaggregation of Revenue [Line Items]
Net sales	17,531	15,923
Commercial Foodservice Equipment Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	359,904	312,249
Commercial Foodservice Equipment Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	255,113	224,622
Commercial Foodservice Equipment Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	29,032	32,250
Commercial Foodservice Equipment Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	66,611	46,493
Commercial Foodservice Equipment Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	9,148	8,884
Residential Kitchen [Member]
Disaggregation of Revenue [Line Items]
Net sales	136,324	140,772
Residential Kitchen [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	78,560	80,838
Residential Kitchen [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	1,519	2,538
Residential Kitchen [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	55,055	56,347
Residential Kitchen [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	1,190	1,049
Food Processing Group [Member]
Disaggregation of Revenue [Line Items]
Net sales	88,572	77,276
Food Processing Group [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	66,935	59,745
Food Processing Group [Member] | Asia
Disaggregation of Revenue [Line Items]
Net sales	5,712	4,423
Food Processing Group [Member] | Europe and Middle East
Disaggregation of Revenue [Line Items]
Net sales	8,732	7,118
Food Processing Group [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 7,193	$ 5,990