GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Indefinite-lived Intangible Assets [Line Items]
Cost	$ 100,505	$ 128,617
Accumulated Amortization	46,368	63,943
Total	$ 54,137	$ 64,674
Completed technologies
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	7 years	6 years 10 months 24 days
Cost	$ 88,435	$ 95,761
Accumulated Amortization	40,104	39,254
Total	$ 48,331	$ 56,507
Customer relationships
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years	4 years 8 months 12 days
Cost	$ 5,000	$ 25,168
Accumulated Amortization	2,483	21,396
Total	$ 2,517	$ 3,772
Trade names
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years	5 years
Cost	$ 6,470	$ 7,088
Accumulated Amortization	3,278	2,967
Total	$ 3,192	$ 4,121
Covenants not to compete
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	3 years	3 years
Cost	$ 600	$ 600
Accumulated Amortization	503	326
Total	$ 97	$ 274