GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025
Indefinite Lived Intangible Assets By Major Class [Line Items]
Cost	$ 88,161	$ 88,194
Accumulated Amortization	51,692	48,395
Total	$ 36,469	$ 39,799
Completed technologies
Indefinite Lived Intangible Assets By Major Class [Line Items]
Weighted Average Amortization Period (in years)	7 years	7 years
Cost	$ 76,496	$ 76,524
Accumulated Amortization	42,838	40,120
Total	$ 33,658	$ 36,404
Customer relationships
Indefinite Lived Intangible Assets By Major Class [Line Items]
Weighted Average Amortization Period (in years)	5 years	5 years
Cost	$ 5,088	$ 5,090
Accumulated Amortization	3,836	3,583
Total	$ 1,252	$ 1,507
Trade names
Indefinite Lived Intangible Assets By Major Class [Line Items]
Weighted Average Amortization Period (in years)	5 years	5 years
Cost	$ 6,577	$ 6,580
Accumulated Amortization	5,018	4,692
Total	$ 1,559	$ 1,888