Goodwill and Intangible Assets - Changes in Goodwill (Details) $ in Thousands	12 Months Ended
Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Balance at September 30, 2021	$ 63,096
Acquisition of HooYu	74,206
Impact of revenue restatement	(427)
Foreign currency effect on goodwill	(16,342)
Balance at September 30, 2022	$ 120,186

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.

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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.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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