Condensed Consolidated Statements of Operations and Comprehensive Loss (unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Revenues	[1]	$ 92,793	$ 75,302	$ 181,506	$ 146,800
Operating expenses:
Cost of revenues		46,765	44,420	92,638	86,955
Research and development		23,917	24,149	45,224	47,249
Selling, general and administrative		63,671	55,622	119,849	108,462
Total operating expenses		134,353	124,191	257,711	242,666
Loss from operations		(41,560)	(48,889)	(76,205)	(95,866)
Interest income		2,801	3,941	6,041	8,061
Interest expense		(143)	0	(166)	0
Other income (expense), net		(251)	(199)	(321)	(230)
Loss before income taxes		(39,153)	(45,147)	(70,651)	(88,035)
Income tax expense		(175)	(345)	(271)	(465)
Net loss		(39,328)	(45,492)	(70,922)	(88,500)
Other comprehensive loss:
Change in unrealized gain (loss) on investments		30	(57)	97	77
Foreign currency translation adjustment		(25)	(38)	43	19
Comprehensive loss		$ (39,323)	$ (45,587)	$ (70,782)	$ (88,404)
Net loss per share, basic (in usd per share)		$ (0.66)	$ (0.79)	$ (1.19)	$ (1.54)
Net loss per share, diluted (in usd per share)		$ (0.66)	$ (0.79)	$ (1.19)	$ (1.54)
Weighted average shares used in computing net loss per share attributable to common stockholders—basic (in shares)		59,649	57,779	59,403	57,637
Weighted average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)		59,649	57,779	59,403	57,637

[1] During the three and six months ended March 31, 2025, the Company had revenues from related parties in the amount of $2.8 million and $6.8 million, respectively. During the three and six months ended March 31, 2024, the Company had revenues from related parties in the amount of $3.2 million and $5.6 million, respectively.