Contingent Obligations and Non-Current Liabilities - Schedule of Government Grant Obligations Reflected in Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands |
Dec. 31, 2022 |
Sep. 30, 2022 |
|---|---|---|
| Contingent Obligations and NonCurrent Liabilities Disclosure [Abstract] | ||
| Current liabilities | $ 799 | $ 667 |
| Non-current liabilities | $ 4,521 | $ 4,620 |