Loan Agreements (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2015 | |||||||||||||||||||||||||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||||||||
| Summary of Minimum Future Principal Payments | The minimum future principal payments are as follows (in thousands):
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| Fair Value of Stock Warrants Calculated using Black-Scholes Assumptions | The Company’s warrants were valued using the Black-Scholes option-pricing model. The fair values were derived by applying the following assumptions:
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| Hercules Loan Agreement [Member] | Common Stock Warrants [Member] | |||||||||||||||||||||||||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||||||||
| Fair Value of Stock Warrants Calculated using Black-Scholes Assumptions | The following table shows the Black-Scholes assumptions used to value the warrant:
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