Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Income Statement [Abstract]
Revenue	$ 54,473	$ 62,142
Cost of revenue	21,313	24,623
Gross profit	33,160	37,519
Operating expenses:
Research and development	54,137	54,441
Selling, general and administrative	18,468	18,620
Total operating expenses	72,605	73,061
Loss from operations	(39,445)	(35,542)
Other income, net	2,271	1,286
Loss before income taxes	(37,174)	(34,256)
Provision for income taxes	758	1,646
Net loss	$ (37,932)	$ (35,902)
Net loss per share attributable to ordinary shareholders:
Basic	$ (0.93)	$ (0.91)
Diluted	$ (0.93)	$ (0.91)
Weighted-average shares used to compute net loss per share attributable to ordinary shareholders:
Basic	40,774,991	39,340,791
Diluted	40,774,991	39,340,791