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Commitments, Contingencies and Guarantees-Indemnity (Details Textual 3) (USD $)
Dec. 28, 2014
Dec. 29, 2013
Supplier and Customer [Member]    
Indemnification    
Indemnification Accrual At Carrying Value $ 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_SupplierAndCustomerMember		 $ 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_SupplierAndCustomerMember
Officers, Employees and Directors [Member]    
Indemnification    
Indemnification Accrual At Carrying Value 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_OfficersEmployeesAndDirectorsMember		 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_OfficersEmployeesAndDirectorsMember
Environmental Cost [Member]    
Indemnification    
Indemnification Accrual At Carrying Value $ 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_EnvironmentalCostMember		 $ 0sndk_IndemnificationAccrualAtCarryingValue
/ sndk_IndemnificationAgreementTypeAxis
= sndk_EnvironmentalCostMember