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Fair Value Measurement - Financial Assets and Liabilities Measured at Fair Value (Detail) - Fair Value, Measurements [Member] | Dec. 31, 2015 USD ($)
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Financial assets: |
Total financial assets | $ 13,702,875
Financial liabilities: |
Total financial liabilities | 11,104,993
Money market funds [Member] | Cash equivalents [Member] |
Financial assets: |
Total financial assets | 2,544,475
U.S. Treasury debt obligations [Member] | Cash equivalents [Member] |
Financial assets: |
Total financial assets | 11,158,400
Loan Payable [Member] |
Financial liabilities: |
Total financial liabilities | 10,334,029
Warrants [Member] |
Financial liabilities: |
Total financial liabilities | 770,964
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |
Financial assets: |
Total financial assets | 13,702,875
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market funds [Member] | Cash equivalents [Member] |
Financial assets: |
Total financial assets | 2,544,475
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury debt obligations [Member] | Cash equivalents [Member] |
Financial assets: |
Total financial assets | 11,158,400
Unobservable Inputs (Level 3) [Member] |
Financial liabilities: |
Total financial liabilities | 11,104,993
Unobservable Inputs (Level 3) [Member] | Loan Payable [Member] |
Financial liabilities: |
Total financial liabilities | 10,334,029
Unobservable Inputs (Level 3) [Member] | Warrants [Member] |
Financial liabilities: |
Total financial liabilities | $ 770,964

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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