Organization and Summary of Significant Accounting Policies (Details)	Apr. 01, 2012	Jan. 01, 2012	Apr. 03, 2011
Exchange rate to convert Japanese yen to U.S. dollar	82.25	77.17	84.57

Exchange rate between domestic and foreign countries

No definition available.

Name:	sndk_ExchangeRateBetweenDomesticAndForeignCountries
Namespace Prefix:	sndk_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant