Subsequent events (Details) - USD ($)
$ / shares in Units, $ in Thousands |
Jul. 30, 2018 |
Jul. 24, 2018 |
Jul. 09, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
| Subsequent events |
|
|
|
|
|
| Common stock, authorized |
|
|
|
27,314,288
|
27,314,288
|
| Common stock, par value (in dollars per share) |
|
|
|
$ 0.001
|
$ 0.001
|
| 2017 Plan |
|
|
|
|
|
| Share based payments |
|
|
|
|
|
| Total number of common shares authorized to issue |
|
|
|
2,659,885
|
|
| Number of shares available for grant |
|
|
|
149,567
|
|
| Subsequent events |
|
|
|
|
|
| Subsequent events |
|
|
|
|
|
| Common stock, authorized |
|
|
27,314,288
|
|
|
| Subsequent events | 2018 Plan |
|
|
|
|
|
| Share based payments |
|
|
|
|
|
| Total number of common shares authorized to issue |
|
|
3,617,968
|
|
|
| Common stock reserved for issuance |
|
|
3,486,118
|
|
|
| Number of shares available for grant |
|
|
131,850
|
|
|
| Subsequent events | ESPP |
|
|
|
|
|
| Share based payments |
|
|
|
|
|
| Common stock reserved for issuance |
|
|
348,612
|
|
|
| Share based payment award percentage of outstanding shares |
|
|
1.00%
|
|
|
| Additional number of common shares authorized to issue |
|
|
697,224
|
|
|
| Subsequent events | 2017 Plan | Maximum |
|
|
|
|
|
| Share based payments |
|
|
|
|
|
| Number of shares available for grant |
|
|
2,520,247
|
|
|
| Subsequent events | IPO |
|
|
|
|
|
| Subsequent events |
|
|
|
|
|
| Shares issued |
707,936
|
6,700,000
|
|
|
|
| Shares issued price (in dollars per share) |
$ 15.00
|
$ 15.00
|
|
|
|
| Proceeds from issuance of initial public offering |
$ 9,876
|
$ 93,465
|
|
|
|
| Common stock, par value (in dollars per share) |
|
$ 0.001
|
|
|
|
| Undesignated preferred stock, authorized |
|
10,000,000
|
|
|
|
| Preferred stock, Par Value (in dollars per share) |
|
$ 0.001
|
|
|
|
| Subsequent events | IPO | Maximum |
|
|
|
|
|
| Subsequent events |
|
|
|
|
|
| Common stock, authorized |
|
150,000,000
|
|
|
|