Statements of Convertible Preferred Stock - USD ($)
shares in Thousands, $ in Thousands |
12 Months Ended |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Convertible Preferred Stock Rollforward |
|
|
| Convertible preferred stock shares beginning balance |
560,181
|
|
| Convertible preferred stock shares ending balance |
|
560,181
|
| Series A-1 |
|
|
| Convertible Preferred Stock Rollforward |
|
|
| Convertible preferred stock beginning balance |
$ 22,650
|
$ 22,650
|
| Convertible preferred stock shares beginning balance |
151,773
|
151,773
|
| Conversion of preferred stock upon IPO |
$ (22,650)
|
|
| Conversion of preferred stock upon IPO (in shares) |
(151,773)
|
|
| Convertible preferred stock shares ending balance |
0
|
151,773
|
| Convertible preferred stock ending balance |
|
$ 22,650
|
| Series A-2 |
|
|
| Convertible Preferred Stock Rollforward |
|
|
| Convertible preferred stock beginning balance |
$ 39,979
|
|
| Convertible preferred stock shares beginning balance |
173,453
|
|
| Issuance of convertible preferred stock, net of issuance costs |
|
$ 39,979
|
| Issuance of convertible preferred stock, net of issuance costs (in shares) |
|
173,453
|
| Conversion of preferred stock upon IPO |
$ (39,979)
|
|
| Conversion of preferred stock upon IPO (in shares) |
(173,453)
|
|
| Convertible preferred stock shares ending balance |
0
|
173,453
|
| Convertible preferred stock ending balance |
|
$ 39,979
|
| Series B |
|
|
| Convertible Preferred Stock Rollforward |
|
|
| Convertible preferred stock beginning balance |
$ 69,757
|
|
| Convertible preferred stock shares beginning balance |
234,955
|
|
| Issuance of convertible preferred stock, net of issuance costs |
|
$ 69,757
|
| Issuance of convertible preferred stock, net of issuance costs (in shares) |
|
234,955
|
| Conversion of preferred stock upon IPO |
$ (69,757)
|
|
| Conversion of preferred stock upon IPO (in shares) |
(234,955)
|
|
| Convertible preferred stock shares ending balance |
0
|
234,955
|
| Convertible preferred stock ending balance |
|
$ 69,757
|