Inventories (Narrative) (Details) $ in Millions	3 Months Ended
Mar. 30, 2019 USD ($)
Inventory Disclosure [Abstract]
Decline in finished goods inventories due to sale of the soy and corn business	$ 2.3

The increase (decrease) during the reporting period in the book value of finished goods inventory and work in process inventory.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Name:	us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration