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Shareholders’ Equity - Narrative (Details) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 06, 2021 USD ($) $ / shares | Feb. 12, 2021 USD ($) $ / shares shares | Nov. 30, 2021 shares | Sep. 30, 2021 USD ($) shares | Sep. 30, 2021 USD ($) shares | Sep. 30, 2022 USD ($) shares | Sep. 30, 2020 USD ($) | Sep. 18, 2020
Class of Stock |  |  |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs |  |  |  | $ 29.6 | $ 29.6 |  |  |
Sale of stock, authorized amount |  |  |  |  |  |  | $ 100.0 |
Commission, percentage of gross sales price |  |  |  |  |  |  |  | 0.030
Sale of stock, remaining authorized amount |  |  |  |  |  | $ 69.1 |  |
Unvested restricted incentive shares and units |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Vested not issued (in shares) | shares |  |  |  |  |  | 54,669 |  |
Ordinary shares |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Number of shares issued in transaction | shares |  |  | 17,985,611 | 3,787,972 | 3,787,972 |  |  |
Per share price of issuance (usd per share) | $ / shares | $ 5.56 |  |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs | $ 98.0 |  |  |  |  |  |  |
Sale of stock, consideration received | $ 100.0 |  |  |  |  |  |  |
Ordinary shares | Underwriters public offering |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Number of shares issued in transaction | shares |  | 14,285,715 |  |  |  |  |  |
Per share price of issuance (usd per share) | $ / shares |  | $ 7.00 |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs |  | $ 106.9 |  |  |  |  |  |
Ordinary shares | Options |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Number of shares issued in transaction | shares |  | 2,142,857 |  |  |  |  |  |

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