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GOODWILL AND INTANGIBLE ASSETS - Intangible Assets Arising from Business Acquisitions (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Sep. 30, 2023
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 96,961 $ 96,961
Accumulated Amortization 37,993 36,386
Net $ 58,968 60,575
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 35,581 34,092
Net $ 53,515 55,004
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 542 503
Net $ 1,458 1,497
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 1,870 1,791
Net $ 3,995 $ 4,074