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Stockholders Rights Plan (Details Textuals) (Stockholders Rights Plan [Member], USD $)
12 Months Ended
Dec. 28, 2014
Stockholders Rights Plan [Member]
 
Stockholders Rights Plan  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 1us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ sndk_StockholderRightsPlanAxis
= sndk_StockholdersRightsPlanMember
Preferred Shares Purchased Under Stockholders Rights Plan 0.005sndk_PreferredSharesPurchasedUnderStockholdersRightsPlan
/ sndk_StockholderRightsPlanAxis
= sndk_StockholdersRightsPlanMember
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 225us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ sndk_StockholderRightsPlanAxis
= sndk_StockholdersRightsPlanMember
Minimum Percentage Of Ownership Required To Exercise Stock Rights Plan 15.00%sndk_MinimumPercentageOfOwnershipRequiredToExerciseStockRightsPlan
/ sndk_StockholderRightsPlanAxis
= sndk_StockholdersRightsPlanMember