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GOODWILL AND INTANGIBLE ASSETS - Intangible Assets Arising from Business Acquisitions (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 100,961 $ 100,961
Accumulated Amortization 38,778 33,807
Net $ 62,183 67,154
Developed technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Weighted Average Estimated Useful Lives 15 years  
Gross Carrying Amount $ 89,096 89,096
Accumulated Amortization 32,603 28,137
Net $ 56,493 60,959
Intellectual property    
Acquired Finite-Lived Intangible Assets [Line Items]    
Weighted Average Estimated Useful Lives 13 years  
Gross Carrying Amount $ 2,000 2,000
Accumulated Amortization 463 328
Net $ 1,537 1,672
Trade name    
Acquired Finite-Lived Intangible Assets [Line Items]    
Weighted Average Estimated Useful Lives 20 years  
Gross Carrying Amount $ 5,865 5,865
Accumulated Amortization 1,712 1,475
Net $ 4,153 4,390
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Weighted Average Estimated Useful Lives 5 years  
Gross Carrying Amount $ 4,000 4,000
Accumulated Amortization 4,000 3,867
Net $ 0 $ 133