Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) (Details 2)

v2.4.1.9
Stockholders' Equity (Deficit) (Details 2) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2011
Jul. 08, 2010
Warrants liability        
Outstanding warrants (in shares) 30,258us-gaap_ClassOfWarrantOrRightOutstanding      
Reclassification of warrant to additional paid-in capital $ 145,256trvn_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertiblePreferredStockWarrantLiability      
Fair value of the warrants outstanding   350,519us-gaap_DerivativeLiabilitiesNoncurrent    
Common stock, shares authorized 100,000,000us-gaap_CommonStockSharesAuthorized 132,000,000us-gaap_CommonStockSharesAuthorized    
Preferred Stock, shares authorized 5,000,000us-gaap_PreferredStockSharesAuthorized      
Fair value of the warrants outstanding 82,851trvn_PreferredStockWarrantLiabilityNonCurrent 350,519trvn_PreferredStockWarrantLiabilityNonCurrent    
Series B convertible preferred stock        
Warrants liability        
Number of shares called upon exercise of warrants (in shares) 125,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
     
Outstanding warrants (in shares) 1,225,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
     
Series B 1 convertible preferred stock        
Warrants liability        
Number of shares called upon exercise of warrants (in shares) 1,650,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
     
Warrants        
Warrants liability        
Fair value of the warrants outstanding 82,851us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
     
Warrants | Series B 1 convertible preferred stock        
Warrants 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
 
Warrants | Common Stock | Maximum        
Warrants 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-1 warrants        
Warrants liability        
Number of shares called upon exercise of warrants (in shares)       1,700,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= trvn_SeriesB1WarrantsMember
Outstanding warrants (in shares) 1,100,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= trvn_SeriesB1WarrantsMember
     
Reclassification of warrant to additional paid-in capital $ 145,256trvn_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertiblePreferredStockWarrantLiability
/ us-gaap_ClassOfWarrantOrRightAxis
= trvn_SeriesB1WarrantsMember
     
Series B-1 warrants | Common Stock        
Warrants 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