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Subsequent Events (Details Textual) (Subsequent Event [Member], USD $)
 12 Months Ended
Dec. 31, 2015
Subsequent Event [Member]
  
Subsequent Event [Line Items]  
Proceeds of stock warrant exercises $ 732,010sngx_ProceedsOfStockWarrantExercises
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Proceeds of stock warrant exercises shares 1,165,786sngx_ProceedsOfStockWarrantExercisesShares
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= us-gaap_SubsequentEventMember