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Summary of Significant Accounting Policies (Details 5)
12 Months Ended
Jan. 03, 2015
Computer equipment  
Property and equipment  
Estimated useful lives 3 years
Computer software | Minimum  
Property and equipment  
Estimated useful lives 3 years
Computer software | Maximum  
Property and equipment  
Estimated useful lives 10 years
Furniture  
Property and equipment  
Estimated useful lives 10 years