v3.19.3.a.u2

Organization and Description of Business (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 11, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Operating losses |  | $ 514,021 | $ 384,734 | $ 255,916 |
Accumulated deficit |  | $ 1,496,454 | $ 1,006,627 |  | $ 982,432
IPO |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Shares of common stock issued (in shares) | 26,275,993 |  |  |  |
Price per share (usd per share) | $ 23.00 |  |  |  |
Aggregate net proceeds from the offering | $ 563,000 |  |  |  |

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