Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for CVP Acquisition (Details) - USD ($) $ in Thousands		3 Months Ended
	Jun. 30, 2017	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 29,459	$ 2,696
Goodwill		1,293,896		$ 1,264,810
Stock Issued During Period, Shares, Acquisitions	106,254
Stock Issued During Period, Value, Acquisitions	$ 12,300
CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	621
Payments to Acquire Businesses, Net of Cash Acquired	30,300
Payments to Acquire Businesses, Gross	17,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	4,538
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	147
Goodwill	20,729
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	13,050
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(2,046)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(3,801)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	30,876
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	5,000
Business Combinations, Deferred Tax Assets, Operating Loss Carryforwards	400
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(2,362)
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, Noncurrent Liabilities, Other	0
Scenario, Adjustment [Member] | CVP [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	(1,435)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	(91)
Goodwill	432
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	4,350
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(514)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(633)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	(253)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(2,362)
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 212,365		$ 198,278
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	6,200
Customer Relationships [Member] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 5,700
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] | CVP [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 800
Developed Technology Rights [Member] | Food Processing Group [Member] | CVP [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Backlog [Member] | CVP [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] | CVP [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months