Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for PES Acquisition (Details) (USD $) In Thousands, unless otherwise specified			0 Months Ended				0 Months Ended
	Sep. 27, 2014	Dec. 28, 2013	Mar. 31, 2014 PES [Member]	Sep. 08, 2014 as initially reported	Mar. 31, 2014 as initially reported PES [Member]	Sep. 08, 2014 Scenario, Adjustment [Member]	Mar. 31, 2014 Food Processing Developed Technology Rights [Member] PES [Member]	Mar. 31, 2014 Food Processing Backlog [Member] PES [Member]	Mar. 31, 2014 Food Processing Customer Relationships [Member] PES [Member]
Business Acquisition [Line Items]
Current assets			$ 2,211	$ 3,767	$ 2,211	$ 0
Payments to Acquire Businesses, Net of Cash Acquired			15,000
Property, plant and equipment			3,493		3,493	0
Goodwill			10,847	11,255	10,792	55
Other intangibles			1,600	4,500	1,600	0	600	100	900
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets			21		21	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			(3,172)	(2,296)	(3,117)	(55)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net			15,000	12,861	15,000	0
Business Combination, Contingent Consideration	9,311	8,628	2,356	4,710	2,301	55
Net assets acquired and liabilities assumed			$ 17,356	$ 17,571	$ 17,301	$ 55
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life							7 years	3 months	3 years