Goodwill and Intangible Assets Goodwill and Intangible Assets - Business Acquisition (Details Textuals) (Fusion-io, Inc., USD $) In Billions, except Per Share data, unless otherwise specified	3 Months Ended
Jun. 29, 2014
Fusion-io, Inc.
Business Combinations
Business Acquisition, Contingent Consideration, Cash Payment	$ 1.3
Business Acquisition, Description of Acquired Entity	a developer of flash-based PCIe hardware and software storage solutions that enhance application performance in enterprise and hyperscale data centers
Business Acquisition, Share Price	$ 11.25
Business Acquisition, Name of Acquired Entity	Fusion-io, Inc.

Amount of cash payments that resulted from the contingent consideration arrangement after acquisition date or amount of estimated cash payments prior to acquisition date.

No definition available.

+ Details

Name:	sndk_BusinessAcquisitionContingentConsiderationCashPayment
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionDescriptionOfAcquiredEntity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Name of the acquired entity.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionNameOfAcquiredEntity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_BusinessCombinationsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration