Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Burford Acquisition (Details) - USD ($) $ in Thousands		3 Months Ended
	May 01, 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
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	14,800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	6,528
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	643
Goodwill	8,063
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	(3,178)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	(1,390)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	2,580
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	2,700
Business Combinations, Deferred Tax Assets, Operating Loss Carryforwards	600
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	17,340
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	700
Business Combination, Provisional Information Adjustment, Working Capital	300
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 and Liabilities Assumed, Noncurrent Liabilities, Other	0
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	104
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	(13)
Goodwill	774
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	(924)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	450
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	2,580
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	(349)
Food Processing Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 212,365		$ 198,278
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