Discontinued Operations (Narrative) (Details) - Fiber And Starch Business [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Oct. 03, 2015	Jan. 03, 2015	Dec. 22, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Significant Acquisitions and Disposals, Date of Transaction for Acquisition or Disposal			Dec. 22, 2014
Disposal Group, Including Discontinued Operation, Consideration			$ 37,500
Gain on sale of discontinued operations, net of income taxes	$ (134)	$ 1,898

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

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