Balance Sheet Components - Components of Other Current and Non-current Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2021	Jan. 31, 2021
Other Assets [Abstract]
Deferred sales commissions, current	$ 5,998	$ 4,689
Prepaid expenses	4,456	3,152
Convertible note receivable (see "GTC" below)	1,729	1,605
Deferred inventory costs	387	381
Other current assets	1,025	395
Total other current assets	13,595	10,222
Deferred sales commissions, non-current	13,176	11,474
Other non-current assets	777	736
Total other non-current assets	$ 13,953	$ 12,210