Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Sveba Dahlen Acquisition - USD ($) $ in Thousands		3 Months Ended
	Jun. 30, 2017	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 587,242	$ 597,078
Payments to Acquire Businesses, Net of Cash Acquired		29,459	$ 2,696
Goodwill		1,293,896		$ 1,264,810
Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	$ 10,351
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	4,569
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	21,942
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	8,796
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	9,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	1,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	41,950
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	11,101
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(140)
Payments to Acquire Businesses, Net of Cash Acquired	81,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	1,767
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	1,167
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	(14)
Goodwill	30,887
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	85,938
Scenario, Previously Reported [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	7,751
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	4,569
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	22,686
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	9,128
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	34,175
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	11,782
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	42
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	1,170
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	0
Goodwill	33,785
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	85,938
Scenario, Adjustment [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	2,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	(744)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	(332)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	7,775
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(681)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(140)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	1,725
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	(3)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	(14)
Goodwill	(2,898)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	0
Commercial Foodservice Equipment Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 635,805		$ 631,451
Commercial Foodservice Equipment Group [Member] | Trade Names [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	22,200
Backlog [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 1,600
Backlog [Member] | Commercial Foodservice Equipment Group [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months
Customer Relationships [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 18,100
Customer Relationships [Member] | Commercial Foodservice Equipment Group [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years