Trevena, Inc. Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 2)

Summary of Significant Accounting Policies (Details 2) (Recurring basis, USD $)	Dec. 31, 2014	Dec. 31, 2013
Quoted Prices in Active Markets for Identical Items (Level 1)
Financial assets and liabilities measured at fair value on a recurring basis
Assets	$ 99,875,061	$ 35,663,000
Quoted Prices in Active Markets for Identical Items (Level 1) \| Money market mutual funds
Financial assets and liabilities measured at fair value on a recurring basis
Assets	29,064,011
Quoted Prices in Active Markets for Identical Items (Level 1) \| U.S. Treasury Bonds
Financial assets and liabilities measured at fair value on a recurring basis
Assets	70,698,640
Quoted Prices in Active Markets for Identical Items (Level 1) \| U.S. Treasury Bills
Financial assets and liabilities measured at fair value on a recurring basis
Assets		35,551,000
Quoted Prices in Active Markets for Identical Items (Level 1) \| Restricted cash
Financial assets and liabilities measured at fair value on a recurring basis
Assets	112,410	112,000
Significant Unobservable Inputs (Level 3)
Financial assets and liabilities measured at fair value on a recurring basis
Liabilities	82,851	350,519
Significant Unobservable Inputs (Level 3) \| Warrants
Financial assets and liabilities measured at fair value on a recurring basis
Liabilities	82,851
Significant Unobservable Inputs (Level 3) \| Warrants \| Redeemable convertible preferred stock
Financial assets and liabilities measured at fair value on a recurring basis
Liabilities		350,519
Total
Financial assets and liabilities measured at fair value on a recurring basis
Assets	99,875,061	35,663,000
Liabilities	82,851	350,519
Total \| Warrants
Financial assets and liabilities measured at fair value on a recurring basis
Liabilities	82,851
Total \| Warrants \| Redeemable convertible preferred stock
Financial assets and liabilities measured at fair value on a recurring basis
Liabilities		350,519
Total \| Money market mutual funds
Financial assets and liabilities measured at fair value on a recurring basis
Assets	29,064,011
Total \| U.S. Treasury Bonds
Financial assets and liabilities measured at fair value on a recurring basis
Assets	70,698,640
Total \| U.S. Treasury Bills
Financial assets and liabilities measured at fair value on a recurring basis
Assets		35,551,000
Total \| Restricted cash
Financial assets and liabilities measured at fair value on a recurring basis
Assets	$ 112,410	$ 112,000