Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for CVP Acquisition (Details) - USD ($) $ in Thousands		9 Months Ended
	Jun. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 1,147,738	$ 159,458
Goodwill		1,823,258		$ 1,264,810
Stock Issued During Period, Shares, Acquisitions	106,254
Stock Issued During Period, Value, Acquisitions	$ 12,300
CVP Systems [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	29,800
Payments to Acquire Businesses, Gross	18,000
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	19,602
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	(2,113)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(3,611)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	30,401
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	5,000
Business Combinations, Deferred Tax Assets, Operating Loss Carryforwards	600
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	(1,833)
Stock Issued During Period, Value, Acquisitions		0	$ 12,330
Business Combination, Provisional Information Adjustment, Working Capital	500
Scenario, Previously Reported [Member] | CVP Systems [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 Systems [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	(695)
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	(581)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(443)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	(728)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(1,833)
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 214,039		$ 198,278
Food Processing Group [Member] | Trade Names [Member] | CVP Systems [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 Systems [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 Systems [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Developed Technology Rights [Member] | CVP Systems [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 Systems [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Backlog [Member] | CVP Systems [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 Systems [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months