Annual report pursuant to Section 13 and 15(d)

Long Term Debt (Details)

v2.4.1.9
Long Term Debt (Details) (USD $)
12 Months Ended 4 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Sep. 19, 2014
Long Term Debt        
Gross proceeds $ 1,775,012us-gaap_ProceedsFromIssuanceOfDebt      
Interest expense 70,650us-gaap_InterestExpense 149,756us-gaap_InterestExpense    
Loan and security agreement        
Long Term Debt        
Face amount       35,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Term Loan A        
Long Term Debt        
Face amount       2,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
Interest rate (as a percent) 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
  6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
Deferred financing fees       100,000us-gaap_DeferredFinanceCostsNoncurrentNet
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
Gross proceeds 2,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
     
Debt discount 208,715us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
  208,715us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
200,000us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
Carrying value 1,791,285us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
  1,791,285us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
 
Interest expense     36,833us-gaap_InterestExpense
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanMember
 
Term Loan B        
Long Term Debt        
Face amount       16,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanBMember
Term Loan C        
Long Term Debt        
Face amount       16,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= trvn_TermLoanCMember
Term Loans B And C        
Long Term Debt        
Minimum net cash proceeds from strategic partnerships as a condition to extend the date for payments 50,000,000trvn_DebtInstrumentMinimumNetCashProceedsFromStrategicPartnership
/ us-gaap_CreditFacilityAxis
= trvn_TermLoansBAndCMember
     
Lenders | Loan and security agreement        
Fees        
Final payment fee due upon that last payment date of the amounts borrowed under the agreement subject to adjustment (as a percent)       6.10%trvn_DebtInstrumentFinalPaymentFee
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Final payment fee due upon that last payment date of the amounts borrowed under the agreement, scenario 1 (as a percent)       5.25%trvn_DebtInstrumentFinalPaymentFeeScenario1
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Final payment fee due upon that last payment date of the amounts borrowed under the agreement, scenario 2 (as a percent)       6.60%trvn_DebtInstrumentFinalPaymentFeeScenario2
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Final payment fee due upon that last payment date of the amounts borrowed under the agreement, scenario 3 (as a percent)       7.00%trvn_DebtInstrumentFinalPaymentFeeScenario3
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Prepayment fee as a percent of total amount prepaid if prepayment occurs prior to the first anniversary of the funding       3.00%trvn_DebtInstrumentPrepaymentFeePriorToFirstAnniversaryOfFunding
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Prepayment fee as a percent of total amount prepaid if prepayment occurs between the first and second anniversary of the funding       2.00%trvn_DebtInstrumentPrepaymentFeeBetweenFirstAndSecondAnniversaryOfFunding
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Prepayment fee as a percent of total amount prepaid if prepayment occurs on or after the second anniversary of the funding       1.00%trvn_DebtInstrumentPrepaymentFeeOnOrAfterSecondAnniversaryOfFunding
/ us-gaap_CounterpartyNameAxis
= trvn_LendersMember
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
Three Point        
Fees        
Facility fee       65,000us-gaap_DebtInstrumentFeeAmount
/ us-gaap_CounterpartyNameAxis
= trvn_ThreePointCapitalLlcMember
Additional fee if draws are made on term loans       175,000trvn_DebtInstrumentFeeAmountContingentOnAdditionalBorrowings
/ us-gaap_CounterpartyNameAxis
= trvn_ThreePointCapitalLlcMember
Warrants        
Warrants        
Exercise price (in dollars per share)       5.8610us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Number of trading days prior to the effective date of the agreement that are used to determine the exercise price of warrants       10 days
Warrants | Lenders and Placement Agent | Maximum        
Warrants        
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
Warrants | Three Point        
Warrants        
Number of shares called upon exercise of warrants (in shares)       853us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_ThreePointCapitalLlcMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan B       7,038trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanB
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_ThreePointCapitalLlcMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan C       7,038trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanC
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_ThreePointCapitalLlcMember
Warrants | Oxford        
Warrants        
Number of shares called upon exercise of warrants (in shares)       4,875us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_OxfordMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan B       40,217trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanB
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_OxfordMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan C       40,217trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanC
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_OxfordMember
Warrants | Square I        
Warrants        
Number of shares called upon exercise of warrants (in shares)       1,950us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_SquareIMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan B       16,087trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanB
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_SquareIMember
Maximum Number of Shares Underlying Warrants Issuable Assuming Full Draw of Term Loan C       16,087trvn_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsAssumingFullDrawOfTermLoanC
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_CounterpartyNameAxis
= trvn_SquareIMember
Warrants | Common Stock | Maximum        
Warrants        
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
  20,161us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
 
Warrants | Common Stock | Lenders and Placement Agent        
Warrants        
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