Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Operating activities
Net loss	$ (70,922)	$ (88,500)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	12,784	16,475
Stock-based compensation	32,319	24,844
Other non-cash adjustments	811	796
Changes in assets and liabilities:
Accounts receivable, net	(15,259)	7,401
Inventories	3,217	1,687
Prepaid expenses and other current assets	884	(420)
Other non-current assets	(622)	309
Accounts payable	6,422	(5,725)
Accrued expenses	3,276	3,859
Accrued compensation	(8,658)	(539)
Other liabilities	1,334	(2,583)
Net cash used in operating activities	(34,414)	(42,396)
Investing activities
Purchases of property and equipment	(6,412)	(2,109)
Purchases of investments	(25,525)	(28,966)
Proceeds from maturity of investments	28,975	30,000
Net cash used in investing activities	(2,962)	(1,075)
Financing activities
Proceeds from exercise of stock options	3,722	2,268
Proceeds from the issuance of liability related to sale of future revenue	15,000	0
Proceeds from issuance of common stock under employee stock purchase plan	2,429	2,047
Repurchases of common stock for income tax withholding	(11)	(3,960)
Net cash provided by financing activities	21,140	355
Effect of exchange rates on cash, cash equivalents and restricted cash	51	51
Net decrease in cash, cash equivalents, and restricted cash	(16,185)	(43,065)
Cash, cash equivalents, and restricted cash at beginning of period	229,132	289,281
Cash, cash equivalents, and restricted cash at end of period	212,947	246,216
Supplemental disclosure of cash flow information
Income taxes paid, net of refunds	16	339
Non-cash investing and financing activities
Property and equipment additions included in accounts payable and accrued expenses	1,329	49
Property and equipment capitalized acquired through tenant improvement allowance	$ 0	$ 2,719