Net fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as assets, net of those classified as liabilities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Name:	us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Derivative Financial Instruments and Fair Value Measurements (Embedded Derivative Narrative) (Details) - Enchi Corporation [Member] - USD ($) $ in Millions	Dec. 30, 2017	Dec. 31, 2016	Aug. 29, 2014	Aug. 05, 2011
Derivative [Line Items]
Investment Owned At Cost			$ 0.9	$ 0.5
Investment Embedded Accelerated Payment Option	$ 5.1
Embedded Derivative, Fair Value of Embedded Derivative, Net	$ 2.7	$ 2.9