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Commitments and Contingencies (Detail Textual) (USD $)
0 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 03, 2014
Apr. 27, 2013
Feb. 07, 2012
Sep. 30, 2014
Dec. 31, 2013
Feb. 28, 2007
Mar. 31, 2012
Dec. 31, 2012
Commitments and Contingencies (Textual)                
Commitments related to agreements       $ 325,000us-gaap_CommitmentsFairValueDisclosure $ 400,000us-gaap_CommitmentsFairValueDisclosure      
Payment for commitment milestones   7,000,000sngx_PaymentForCommitmentMilestones     7,900,000sngx_PaymentForCommitmentMilestones      
Percentage for royalties       6.00%sngx_PercentageForRoyalties 6.00%sngx_PercentageForRoyalties      
Monthly rent amount before increment     8,000sngx_MonthlyRentAmountBeforeIncrement          
Monthly rent amount before increment, per square foot     18.25sngx_MonthlyRentAmountBeforeIncrementPerSquareFoot          
Monthly rent amount after increment     8,310sngx_MonthlyRentAmountAfterIncrement          
Monthly rent amount after increment, per square foot     19.00sngx_MonthlyRentAmountAfterIncrementPerSquareFoot          
Number of months after that rent increases     12 months          
Number of remaining months for which increased rent paid     24 months          
Assets acquired 250,000us-gaap_FairValueOfAssetsAcquired              
Shares issued in connection with asset purchase agreement, Shares       1,849,113us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets        
Shares issued in connection with asset purchase agreement, value       3,750,000us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets        
Payments of success oriented milestones 10,000,000sngx_PaymentsOfSuccessOrientedMilestones              
Dr. Schaber [Member]                
Commitments and Contingencies (Textual)                
Number of common shares transferred to third party           50,000sngx_NumberOfCommonSharesTransferredToThirdParty
/ us-gaap_LeaseArrangementTypeAxis
= sngx_DoctorSchaberMember
   
Dr. Brey [Member]                
Commitments and Contingencies (Textual)                
Number of common shares transferred to third party           10,000sngx_NumberOfCommonSharesTransferredToThirdParty
/ us-gaap_LeaseArrangementTypeAxis
= sngx_DoctorBreyMember
   
Mr. Myrianthopoulos [Member]                
Commitments and Contingencies (Textual)                
Termination expense recognized             95,625sngx_ContractTerminationExpenses
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
 
Severance and healthcare benefits               0us-gaap_SeveranceCosts1
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
Number of common stock will be issued upon the conversion of the option issued               53,908us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
Number of shares forfeited               72,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
Number of common stock to be issued upon the conversion of remaining options               192,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecrease
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
Stock-based compensation expense in connection with the acceleration of vesting               $ 68,032us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
/ us-gaap_LeaseArrangementTypeAxis
= sngx_MrMyrianthopoulosMember
Mr. Myrianthopoulos [Member] | Minimum [Member]                
Commitments and Contingencies (Textual)                
Expiration date of option               Nov. 14, 2012
Mr. Myrianthopoulos [Member] | Maximum [Member]                
Commitments and Contingencies (Textual)                
Expiration date of option               Nov. 30, 2021