Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) (Details)

v2.4.1.9
Stockholders' Equity (Deficit) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 1 Months Ended 12 Months Ended
Dec. 10, 2014
Mar. 06, 2014
Feb. 05, 2014
Mar. 06, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Stockholders' (deficit) equity              
Issuance of common stock in public offering (in shares) 11,250,000trvn_StockIssuedDuringPeriodSharesNewIssuesPublicOffering            
Issuance of common stock underwriters allotment option (in shares) 1,598,000trvn_StockIssuedDuringPeriodSharesNewIssuesExerciseOfUnderwritersAllotmentOption            
Shares of common stock sold 12,848,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 270,449us-gaap_StockIssuedDuringPeriodSharesNewIssues 9,250,000us-gaap_StockIssuedDuringPeriodSharesNewIssues        
Public offering price (in dollars per share) $ 4.00us-gaap_EquityIssuancePerShareAmount $ 7.00us-gaap_EquityIssuancePerShareAmount $ 7.00us-gaap_EquityIssuancePerShareAmount        
Aggregate gross proceeds from shares sold $ 51.4us-gaap_StockIssuedDuringPeriodValueNewIssues $ 1.9us-gaap_StockIssuedDuringPeriodValueNewIssues $ 64.8us-gaap_StockIssuedDuringPeriodValueNewIssues        
Redeemable convertible preferred stock, conversion ratio         0.1613trvn_TemporaryEquityConversionRatio 0.1613trvn_TemporaryEquityConversionRatio  
Number of outstanding warrants not exercised as part of the IPO       22,580trvn_OutstandingWarrantsNotExercisedAsPartOfInitialPublicOffering      
Shares of common stock issued upon conversion of outstanding convertible preferred stock and net exercise of a portion of warrants       15,728,286trvn_StockIssuedDuringPeriodSharesConversionOfConvertibleSecuritiesAndWarrantsExercised      
Redeemable convertible preferred stock outstanding which converted into common shares              
Preferred Shares Outstanding           97,389,703us-gaap_TemporaryEquitySharesOutstanding  
Conversion into common shares upon initial public offering (in shares)           15,708,013us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities  
Series A convertible preferred stock              
Redeemable convertible preferred stock outstanding which converted into common shares              
Preferred Shares Outstanding         0us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesAPreferredStockMember
25,074,999us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesAPreferredStockMember
25,074,999us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesAPreferredStockMember
Conversion into common shares upon initial public offering (in shares)       4,044,354us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesAPreferredStockMember
     
Series B convertible preferred stock              
Stockholders' (deficit) equity              
Number of shares in warrant issued in connection with a banking facility           125,000trvn_WarrantToPurchasePreferredStockShares
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
 
Redeemable convertible preferred stock outstanding which converted into common shares              
Preferred Shares Outstanding         0us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
30,800,000us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
30,800,000us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
Conversion into common shares upon initial public offering (in shares)       4,967,741us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesBPreferredStockMember
     
Series B 1 convertible preferred stock              
Redeemable convertible preferred stock outstanding which converted into common shares              
Preferred Shares Outstanding         0us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
4,750,000us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
4,200,000us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
Conversion into common shares upon initial public offering (in shares)       766,129us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesB1PreferredStockMember
     
Series C convertible preferred stock              
Redeemable convertible preferred stock outstanding which converted into common shares              
Preferred Shares Outstanding         0us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesCPreferredStockMember
36,764,704us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesCPreferredStockMember
 
Conversion into common shares upon initial public offering (in shares)       5,929,789us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= trvn_RedeemableConvertibleSeriesCPreferredStockMember