Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 4)

v2.4.1.9
Summary of Significant Accounting Policies (Details 4) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Jul. 08, 2010
Sep. 19, 2014
Dec. 31, 2011
Fair value, warrant liability          
Transfers between levels within the fair value hierarchy $ 0trvn_FairValueMeasurementAssetLiabilitiesTransfersBetweenLevels $ 0trvn_FairValueMeasurementAssetLiabilitiesTransfersBetweenLevels      
Fair value of the warrants outstanding   350,519us-gaap_DerivativeLiabilitiesNoncurrent      
Warrants          
Fair value, warrant liability          
Fair value of the warrants outstanding $ 82,851us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
       
Series B-1 warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares)     1,700,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= trvn_SeriesB1WarrantsMember
   
Maximum | Lenders and Placement Agent | Warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares)       126,685us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_LendersAndPlacementAgentMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Common Stock | Series B-1 warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares) 20,273us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= trvn_SeriesB1WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
       
Common Stock | Lenders and Placement Agent | Warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares)       7,678us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_LendersAndPlacementAgentMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
 
Common Stock | Maximum | Warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares) 20,161us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
       
Series B preferred stock | Warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares)         125,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Series B 1 convertible preferred stock          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares) 1,650,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
       
Series B 1 convertible preferred stock | Warrants          
Fair value, warrant liability          
Number of shares called upon exercise of warrants (in shares)         1,650,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember