STOCKHOLDERS’ EQUITY - Schedule of Stock-based Compensation Expense Related to Stock Options and RSUs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4,890	$ 4,422	$ 12,582	$ 13,239
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	327	181	990	504
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,983	2,004	8,574	6,027
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	604	1,287	851	3,749
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 976	$ 950	$ 2,167	$ 2,959