Convertible Preferred Stock	9 Months Ended
Sep. 30, 2019
Temporary Equity Disclosure [Abstract]
Convertible Preferred Stock	8. Convertible Preferred Stock As of April 5, 2018, the Company had issued Series A, Series B, Series D, Series E, Series E-1, and Series F convertible preferred stock (collectively the “Preferred Stock”). On July 23, 2018, upon the closing of the Company’s IPO, all outstanding convertible preferred stock automatically converted into shares of common stock.

The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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