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Employee Stock Purchase Plan - Additional Information (Detail) - 2019 ESPP [Member] - shares | 9 Months Ended | 39 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Ordinary shares, discount rate | 10.00% |
Number of ordinary shares issued | 53,567 | 247,761
Minimum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Eligible employees contribution from their eligible compensation during each semi annual | 1.00% |
Maximum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Eligible employees contribution from their eligible compensation during each semi annual | 15.00% |
Number of ordinary shares issued | 500,000 |

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