Summary of Significant Accounting Policies and Estimates (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
[1] | Dec. 31, 2015 |
Dec. 31, 2014 |
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Numerator: | ||||||||||||||||||||
Net loss applicable to common stockholders | $ (5,576) | $ (11,494) | $ (9,970) | $ (6,775) | $ (9,300) | $ (5,185) | $ (5,645) | $ (4,115) | $ (33,815) | $ (24,245) | $ (33,769) | |||||||||
Adjustment for gain on fair value of warrant liability | (4,286) | (2,505) | 0 | |||||||||||||||||
Adjusted net loss used for dilution calculation | $ (38,101) | $ (26,750) | $ (33,769) | |||||||||||||||||
Denominator | ||||||||||||||||||||
Weighted-average number of shares outstanding | 18,126 | 14,606 | 11,181 | |||||||||||||||||
Effect of potential dilutive shares | 496 | 3 | 0 | |||||||||||||||||
Dilutive weighted-average number of shares outstanding | 18,622 | 14,609 | 11,181 | |||||||||||||||||
Net loss per share applicable to common stockholders | ||||||||||||||||||||
Basic (in dollars per share) | $ (0.29) | [2] | $ (0.60) | [2] | $ (0.61) | [2] | $ (0.44) | [2] | $ (1.87) | $ (1.66) | $ (3.02) | |||||||||
Diluted (in dollars per share) | $ (0.35) | [2] | $ (0.60) | [2] | $ (0.61) | [2] | $ (0.44) | [2] | $ (2.05) | $ (1.83) | $ (3.02) | |||||||||
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