Condensed Consolidated Statements of Operations and Comprehensive Loss (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Revenues	$ 48,127	$ 31,204	$ 90,145	$ 59,364
Operating expenses:
Cost of revenues	29,714	19,028	56,770	37,190
Research and development	31,231	15,791	53,861	29,791
Selling, general and administrative	53,998	34,389	105,096	63,181
Change in fair value of contingent considerations and holdbacks	(6,014)	0	(8,840)	0
Total operating expenses	108,929	69,208	206,887	130,162
Loss from operations	(60,802)	(38,004)	(116,742)	(70,798)
Interest income	259	157	412	291
Interest expense	(29)	(95)	(54)	(213)
Other income (expense), net	(245)	84	(401)	8
Loss before income taxes	(60,817)	(37,858)	(116,785)	(70,712)
Benefit from (provision for) income taxes	149	(61)	10,554	(107)
Net loss attributable to common stockholders	(60,668)	(37,919)	(106,231)	(70,819)
Other comprehensive loss:
Change in unrealized gain (loss) on investments	(1,113)	10	(1,389)	1
Foreign currency translation adjustment	275	38	368	102
Comprehensive loss	$ (61,506)	$ (37,871)	$ (107,252)	$ (70,716)
Net loss per share attributable to common stockholders—basic (in usd per share)	$ (1.13)	$ (0.78)	$ (2.06)	$ (1.50)
Net loss per share attributable to common stockholders—diluted (in usd per share)	$ (1.13)	$ (0.78)	$ (2.06)	$ (1.50)
Weighted average shares used in computing net loss per share attributable to common stockholders—basic (in shares)	53,472	48,709	51,673	47,340
Weighted average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)	53,472	48,709	51,673	47,340