Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed - Hinds Bock (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 16, 2018	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018	Apr. 03, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 12,397	$ 29,459
Goodwill		1,738,737		$ 1,743,175
Hinds-Bock
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 25,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	5,298
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	3,557
Goodwill	11,520
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	9,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent	115
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(4,265)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	25,430
Business Combination, Provisional Information Adjustment, Working Capital	400
Customer Relationships | Hinds-Bock
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	3,700
Backlog | Hinds-Bock
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 600
Food Processing Group
Business Acquisition [Line Items]
Goodwill		$ 215,647		$ 219,054
Food Processing Group | Customer Relationships | Hinds-Bock
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years
Food Processing Group | Backlog | Hinds-Bock
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months
Trade Names | Food Processing Group | Hinds-Bock
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 4,900
Previously Reported | Hinds-Bock
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	5,301
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	3,557
Goodwill	12,686
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	8,081
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(3,800)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	25,830
Scenario, Adjustment | Hinds-Bock
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	(3)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	0
Goodwill	(1,166)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	1,119
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent	115
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	$ (465)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net					$ (400)