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Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
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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- Details
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