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Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Indefinite-lived Intangible Assets [Line Items]
Cost	$ 55,517	$ 38,587
Accumulated Amortization	26,783	19,298
Finite-Lived Intangible Assets, Net, Total	$ 28,734	$ 19,289
Completed technologies
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period	6 years 7 months 6 days	6 years 4 months 24 days
Cost	$ 34,361	$ 20,341
Accumulated Amortization	13,311	9,416
Finite-Lived Intangible Assets, Net, Total	$ 21,050	$ 10,925
Customer relationships
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period	4 years 7 months 6 days	4 years 9 months 18 days
Cost	$ 20,168	$ 17,628
Accumulated Amortization	12,905	9,390
Finite-Lived Intangible Assets, Net, Total	$ 7,263	$ 8,238
Trade names
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period	4 years 8 months 12 days	4 years 6 months
Cost	$ 988	$ 618
Accumulated Amortization	567	492
Finite-Lived Intangible Assets, Net, Total	$ 421	$ 126

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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+ References

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