Segment Information (Tables)

12 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Summary of Segment Reporting Information, by Segment

The following table presents entity-wide significant expense categories and net loss details provided to the CODM:

	Year ended September 30,
(In thousands)	2025		2024		2023
Revenues	$	376,572	$	312,974	$	245,109
Costs and expenses:
Cost of revenues[1]	$	161,545	$	154,030	$	132,417
Research and development expenses[1]	69,950		76,605		88,937
Selling, general and administrative expenses[1]	192,024		175,883		171,070
Depreciation and amortization	24,853		31,432		29,310
Stock-based compensation expense	64,459		50,925		30,278
Restructuring and other costs	—		—		9,384
Change in fair value of contingent considerations and holdbacks	—		—		(5,913)
Impairment of long-lived assets	—		44,930		6,785
Total costs and expenses	$	512,831	$	533,805	$	462,268
Loss from operations	$	(136,259)	$	(220,831)	$	(217,159)
Gain on sale of business	$	48,847	$	—	$	—
Interest income	11,364		15,344		14,365
Other income (expense), net	(903)		(2,679)		(672)
Income (loss) before income taxes	$	(76,951)	$	(208,166)	$	(203,466)
Income tax expense	(719)		(560)		(1,152)
Net loss	$	(77,670)	$	(208,726)	$	(204,618)

[1] Excludes depreciation and amortization and stock-based compensation expense