Redeemable Convertible Preferred Stock (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||
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Dec. 31, 2015 | ||||||||||||||||||||||||||||||||||||
| Series C Redeemable Convertible Preferred Stock [Member] | ||||||||||||||||||||||||||||||||||||
| Summary of Estimated Fair Values of Outstanding Warrants Using Black-Scholes Option-Pricing Model | The fair value of the Series C preferred stock warrants as of the IPO closing date was $2.3 million and was determined using the Black-Scholes option-pricing model with the following assumptions:
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