Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Burford Acquisition (Details) - USD ($) $ in Thousands		6 Months Ended
	May 01, 2017	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 119,262	$ 212,024
Goodwill		1,134,994		$ 1,092,722
Burford [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 15,200
Scenario, Previously Reported [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	2,514
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	8,594
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	656
Goodwill	7,289
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	4,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(4,424)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	1,840
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	2,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	17,689
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	200
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 164,967		$ 134,680
Trade Names [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	2,400
Customer Relationships [Member] | Scenario, Previously Reported [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 2,100
Customer Relationships [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Developed Technology Rights [Member] | Scenario, Previously Reported [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 100
Developed Technology Rights [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Backlog [Member] | Scenario, Previously Reported [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 300
Backlog [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months