Name:	sndk_GuaranteeObligationsMaximumExposureYearFive
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	sndk_GuaranteeObligationsMaximumExposureYearFour
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	sndk_GuaranteeObligationsMaximumExposureYearOne
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	sndk_GuaranteeObligationsMaximumExposureYearThree
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	sndk_GuaranteeObligationsMaximumExposureYearTwo
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	sndk_RemainingGuaranteeObligationsAbstract
Namespace Prefix:	sndk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248