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Acquisitions and Purchase Accounting Estimated Fair Value of Assets Acquired and Liabilities Assumed - MTek (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 01, 2018	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018
Business Acquisition [Line Items]
Current Fiscal Year End Date		--12-28
Payments to Acquire Businesses, Net of Cash Acquired		$ 12,397	$ 29,459
Goodwill		1,738,737		$ 1,743,175
M-TEK
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 20,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	3,294
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	2,745
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	2,497
Goodwill	11,610
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(144)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	20,002
Food Processing Group
Business Acquisition [Line Items]
Goodwill		$ 215,647		$ 219,054
Customer Relationships \| Food Processing Group \| M-TEK
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 2,700
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Developed Technology Rights \| Food Processing Group \| M-TEK
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Backlog \| Food Processing Group \| M-TEK
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Previously Reported \| M-TEK
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 3,294
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	2,745
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	2,497
Goodwill	11,610
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(144)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	20,002
Scenario, Adjustment \| M-TEK
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	0
Goodwill	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 0