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Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Jun. 30, 2022
Sep. 30, 2021
Indefinite Lived Intangible Assets By Major Class [Line Items]    
Cost $ 128,617 $ 55,517
Accumulated Amortization 42,874 26,783
Net $ 85,743 $ 28,734
Completed technologies    
Indefinite Lived Intangible Assets By Major Class [Line Items]    
Weighted Average Amortization Period (in years) 6 years 10 months 24 days 6 years 7 months 6 days
Cost $ 95,761 $ 34,361
Accumulated Amortization 24,635 13,311
Net $ 71,126 $ 21,050
Customer relationships    
Indefinite Lived Intangible Assets By Major Class [Line Items]    
Weighted Average Amortization Period (in years) 4 years 8 months 12 days 4 years 7 months 6 days
Cost $ 25,168 $ 20,168
Accumulated Amortization 16,683 12,905
Net $ 8,485 $ 7,263
Trade names    
Indefinite Lived Intangible Assets By Major Class [Line Items]    
Weighted Average Amortization Period (in years) 5 years 4 years 8 months 12 days
Cost $ 7,088 $ 988
Accumulated Amortization 1,458 567
Net $ 5,630 $ 421
Covenants not to compete    
Indefinite Lived Intangible Assets By Major Class [Line Items]    
Weighted Average Amortization Period (in years) 3 years  
Cost $ 600  
Accumulated Amortization 98  
Net $ 502