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v3.10.0.1

Nature of the Business (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 26, 2018 | Jun. 22, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Class of Stock |  |  |  |  |  |  |
Net loss |  |  | $ 20,648 | $ 7,524 | $ 44,751 | $ 19,727 | $ 12,550
Accumulated deficit |  |  | 113,301 |  | 92,653 | 47,902 |
Cash |  |  | $ 217,450 | $ 128,984 | $ 246,984 | $ 137,070 | $ 28,059
Ordinary shares | IPO |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |
Number of shares issued in transaction (shares) | 10,147,059 |  |  |  |  |  |
Per share price of issuance (usd per share) | $ 17.00 |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs |  | $ 156,500 |  |  |  |  |
Ordinary shares | Options |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |
Number of shares issued in transaction (shares) | 1,323,529 |  |  |  |  |  |

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