Annual report pursuant to Section 13 and 15(d)

Long Term Debt (Details 2)

v2.4.1.9
Long Term Debt (Details 2) (USD $)
12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2013
May 03, 2013
Dec. 31, 2011
Sep. 19, 2014
Dec. 31, 2014
Long Term Debt          
Repayments of outstanding amount of loan, including unpaid interest and fees $ 4,946,667us-gaap_RepaymentsOfDebt        
Warrants          
Long Term Debt          
Exercise price of warrants (in dollars per share)       $ 5.8610us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
 
Warrants | Series B preferred stock          
Long Term Debt          
Number of shares that can be purchased     125,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Maximum | Warrants | Common Stock          
Long Term Debt          
Number of shares that can be purchased         20,161us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
Loan Facility with Comerica Bank          
Long Term Debt          
Interest expense 42,047us-gaap_InterestExpenseDebt
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
       
Repayments of outstanding amount of loan, including unpaid interest and fees   4,073,485us-gaap_RepaymentsOfDebt
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
     
Debt discount     101,707us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
   
Amortization of debt discount 78,460us-gaap_AmortizationOfDebtDiscountPremium
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
       
Loan Facility with Comerica Bank | Warrants | Series B preferred stock          
Long Term Debt          
Warrant exercise period     10 years    
Number of shares that can be purchased     125,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Exercise price of warrants (in dollars per share)     $ 1.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Loan Facility with Comerica Bank | Maximum          
Long Term Debt          
Face amount $ 64,292us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= trvn_LoanFacilityWithComericaBankMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember