CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
|
Dec. 31, 2018 |
Dec. 31, 2017 |
| Convertible preferred stock, shares authorized ( in shares) |
|
44,070,808
|
| Convertible preferred stock, shars issued (in shares) |
|
43,933,006
|
| Convertible preferred stock, shars outstanding (in shares) |
0
|
43,933,006
|
| Preferred stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Preferred stock, share authorized (in shares) |
10,000,000
|
0
|
| Preferred stock, shares issued (in shares) |
0
|
0
|
| Preferred stock, shares outstanding (in shares) |
0
|
0
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, share authorized (in shares) |
150,000,000
|
65,000,000
|
| Common stock, shares issued (in shares) |
79,234,853
|
14,977,317
|
| Common stock, shares outstanding (in shares) |
79,234,853
|
14,977,317
|
| Convertible preferred stock |
|
|
| Convertible preferred stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Convertible preferred stock, shares authorized ( in shares) |
0
|
44,070,808
|
| Convertible preferred stock, shars issued (in shares) |
0
|
43,933,006
|
| Convertible preferred stock, shars outstanding (in shares) |
0
|
43,933,006
|