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Concentration of Risk and Segment Information (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2014
Dec. 29, 2013
Revenues from External Customers and Long-Lived Assets    
Long-Lived Assets $ 1,252,263us-gaap_NoncurrentAssets $ 1,214,051us-gaap_NoncurrentAssets
United States [Member]    
Revenues from External Customers and Long-Lived Assets    
Long-Lived Assets 314,578us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US		 313,959us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
China [Member]    
Revenues from External Customers and Long-Lived Assets    
Long-Lived Assets 283,533us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CN		 299,704us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CN
Japan [Member]    
Revenues from External Customers and Long-Lived Assets    
Long-Lived Assets 503,234us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_JP		 553,318us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_JP
Other foreign countries [Member]    
Revenues from External Customers and Long-Lived Assets    
Long-Lived Assets $ 150,918us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= sndk_OtherForeignCountriesMember		 $ 47,070us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= sndk_OtherForeignCountriesMember