Derivative Loss	3 Months Ended
Mar. 31, 2017
Derivative Loss
Derivative Loss	16. Derivative Loss During the three months ended March 31, 2017 and 2016 the Company recorded approximately $0.1 million and approximately $1.2 million of warrant derivative loss, respectively related to an increase in the fair value of the liability recorded for warrants to acquire the Company’s common stock (see Note 13). The warrant liability has been recorded at fair value based on the Black Scholes model as of March 31, 2017 and primarily on a valuation performed by a third party expert using a Monte Carlo simulation for December 31, 2016, both of which fall within Level 3 of the fair value hierarchy (see Note 11). The third party valuation model takes into account the probability that the Company could issue additional shares in a future transaction at a lower price than the current exercise price of the warrants. Significant inputs to the third party valuation model included prices for the warrants disclosed above, the probability of an additional issuance of the Company’s common stock at a lower price than the current warrant exercise price and the inputs in the table below for the respective periods. Significant inputs to the Black Scholes model included inputs developed in the third party valuation model. During the three months ended March 31, 2016 the Company recorded approximately $0.6 million of derivative loss related to an increase in the fair value of the derivative liability related to the Sentient Loan (see Note 10). The derivative liability was recorded at fair value at March 31, 2016 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy (see Note 11). Significant inputs to the valuation model included: 1) future variations in the Company’s stock price, and 2) the probability of entering into an equity transaction prior to the loan maturity date that would lower the conversion price. At March 31, 2017 and December 31, 2016 the Sentient Loan had been fully converted.

Derivative Loss

3 Months Ended

Mar. 31, 2017

16. Derivative Loss

During the three months ended March 31, 2017 and 2016 the Company recorded approximately $0.1 million and approximately $1.2 million of warrant derivative loss, respectively related to an increase in the fair value of the liability recorded for warrants to acquire the Company’s common stock (see Note 13). The warrant liability has been recorded at fair value based on the Black Scholes model as of March 31, 2017 and primarily on a valuation performed by a third party expert using a Monte Carlo simulation for December 31, 2016, both of which fall within Level 3 of the fair value hierarchy (see Note 11). The third party valuation model takes into account the probability that the Company could issue additional shares in a future transaction at a lower price than the current exercise price of the warrants. Significant inputs to the third party valuation model included prices for the warrants disclosed above, the probability of an additional issuance of the Company’s common stock at a lower price than the current warrant exercise price and the inputs in the table below for the respective periods. Significant inputs to the Black Scholes model included inputs developed in the third party valuation model.

During the three months ended March 31, 2016 the Company recorded approximately $0.6 million of derivative loss related to an increase in the fair value of the derivative liability related to the Sentient Loan (see Note 10). The derivative liability was recorded at fair value at March 31, 2016 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy (see Note 11). Significant inputs to the valuation model included: 1) future variations in the Company’s stock price, and 2) the probability of entering into an equity transaction prior to the loan maturity date that would lower the conversion price. At March 31, 2017 and December 31, 2016 the Sentient Loan had been fully converted.