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Derivative Liabilities (Narrative) (Details) (USD $)
Jun. 05, 2014
May 31, 2014
Mar. 31, 2015
Derivatives, Fair Value [Line Items]      
Class of Warrant or Right, Exercise Price of Warrants or Rights 8.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights 9.60us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights  
Percentage of Adjustment to Conversion Price 120.00%sppr_PercentageOfAdjustmentToConversionPrice    
Subscription Rights [Member]      
Derivatives, Fair Value [Line Items]      
Debt instrument original conversion price, per share $ 1.60us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DerivativeInstrumentRiskAxis
= sppr_SubscriptionRightsMember		    
Rights Offering [Member]      
Derivatives, Fair Value [Line Items]      
Class of Warrant or Right, Exercise Price of Warrants or Rights 1.92us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DerivativeInstrumentRiskAxis
= sppr_RightsOfferingMember		    
Series C preferred embedded derivative [Member]      
Derivatives, Fair Value [Line Items]      
Debt instrument original conversion price, per share     $ 8.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EmbeddedDerivativeFinancialInstrumentsMember