Goodwill and intangible assets - Summary of Goodwill (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
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| Goodwill [Roll Forward] | ||
| Balance at beginning of year | $ 22,434 | $ 1,138 |
| Business acquisition – additions (see Note 14) | 61,768 | 21,538 |
| Remeasurement adjustments to the deferred tax assets | 1,609 | (242) |
| Balance at end of year | $ 85,811 | $ 22,434 |
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of (increase) decrease to an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from the subsequent recognition of deferred tax assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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