GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Indefinite-lived Intangible Assets [Line Items]
Cost	$ 88,194	$ 100,505
Accumulated Amortization	48,395	46,368
Total	$ 39,799	$ 54,137
Completed technologies
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	7 years	7 years
Cost	$ 76,524	$ 88,435
Accumulated Amortization	40,120	40,104
Total	$ 36,404	$ 48,331
Customer relationships
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years	5 years
Cost	$ 5,090	$ 5,000
Accumulated Amortization	3,583	2,483
Total	$ 1,507	$ 2,517
Trade names
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years	5 years
Cost	$ 6,580	$ 6,470
Accumulated Amortization	4,692	3,278
Total	$ 1,888	$ 3,192
Covenants not to compete
Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)		3 years
Cost		$ 600
Accumulated Amortization		503
Total		$ 97