Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Burford Acquisition (Details) - USD ($) $ in Thousands		9 Months Ended
	May 01, 2017	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 159,458	$ 210,921
Goodwill		1,158,654		$ 1,092,722
Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 2,514
Payments to Acquire Businesses, Net of Cash Acquired	15,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	6,460
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	643
Goodwill	6,239
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	6,740
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(2,287)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(2,620)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	2,700
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	100
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	6,424
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	(2,254)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(1,840)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	17,689
Scenario, Adjustment [Member] | Burford [Member]
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	36
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	(13)
Goodwill	(1,050)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	1,840
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(33)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(780)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	0
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 164,183		$ 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	2,700
Customer Relationships [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 3,100
Customer Relationships [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years
Developed Technology Rights [Member] | Burford [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 700
Developed Technology Rights [Member] | Food Processing Group [Member] | Burford [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Backlog [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