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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) (Parenthetical) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2018 | Mar. 31, 2018
Series A Convertible Preferred Stock |  |
Issuance of shares, offering costs |  | $ 0.4
Series B Convertible Preferred Stock |  |
Issuance of shares, offering costs | $ 0.5 |

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- Definition Temporary equity offering costs. + References No definition available. + Details
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- Details
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Period Type: |