Composition of Certain Financial Statement Items - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 108,292	$ 56,121	$ 189,925	$ 96,631
United States
Disaggregation of Revenue [Line Items]
Total revenue	84,610	51,109	146,925	86,219
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 23,682	$ 5,012	$ 43,000	$ 10,412