Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for CVP Acquisition (Details) - USD ($) shares in Thousands, $ in Thousands		6 Months Ended
	Jun. 30, 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
Stock Issued During Period, Shares, Acquisitions	106		0
Stock Issued During Period, Value, Acquisitions	$ 12,300	12,330
CVP [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	30,500
Payments to Acquire Businesses, Gross	18,200
Scenario, Previously Reported [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	621
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	5,973
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	238
Goodwill	20,297
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	8,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(1,532)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(3,168)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	31,129
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	3,300
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	100
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 164,967		$ 134,680
Food Processing Group [Member] | Trade Names [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	4,300
Customer Relationships [Member] | Scenario, Previously Reported [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 3,600
Customer Relationships [Member] | Food Processing Group [Member] | CVP [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Developed Technology Rights [Member] | Scenario, Previously Reported [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 200
Developed Technology Rights [Member] | Food Processing Group [Member] | CVP [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Backlog [Member] | Scenario, Previously Reported [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 600
Backlog [Member] | Food Processing Group [Member] | CVP [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months