Intangible Assets, Net - Schedule of intangible assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,922	$ 4,466
Accumulated Amortization	(3,577)	(2,950)
Net carrying amount	$ 1,345	$ 1,516
Patents
Finite-Lived Intangible Assets [Line Items]
Estimated Life	10 years	10 years
Gross Carrying Amount	$ 2,717	$ 2,387
Accumulated Amortization	(1,581)	(1,129)
Net carrying amount	$ 1,136	$ 1,258
Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	3 years	3 years
Gross Carrying Amount	$ 1,365	$ 1,239
Accumulated Amortization	(1,156)	(981)
Net carrying amount	$ 209	$ 258
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years	5 years
Gross Carrying Amount	$ 840	$ 840
Accumulated Amortization	(840)	(840)
Net carrying amount	$ 0	$ 0