Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Income Statement [Abstract]
Revenue	$ 90,305	$ 70,133
Cost of revenue	33,758	26,368
Gross profit	56,547	43,765
Operating expenses:
Research and development	46,690	37,874
Selling, general and administrative	20,355	16,027
Total operating expenses	67,045	53,901
Loss from operations	(10,498)	(10,136)
Other income, net	86	593
Loss before income taxes	(10,412)	(9,543)
Provision for income taxes	410	1,275
Net loss	$ (10,822)	$ (10,818)
Net loss per share attributable to ordinary shareholders:
Basic	$ (0.29)	$ (0.30)
Diluted	$ (0.29)	$ (0.30)
Weighted-average shares used to compute net loss per share attributable to ordinary shareholders:
Basic	37,715,338	35,940,304
Diluted	37,715,338	35,940,304