Goodwill and Other Intangible Assets - Schedule of Net Carrying Amount (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Gross Carrying Amount	$ 7,060	$ 7,060
Goodwill, Impairment	(7,060)	(7,060)
Goodwill, Net Carrying Amount	0	0
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,256	18,253
Accumulated Amortization	(11,159)	(10,743)
Impairment	(760)	(760)
Net Carrying Amount	$ 6,337	6,750
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 years
Gross Carrying Amount	$ 7,784	7,781
Accumulated Amortization	(3,807)	(3,688)
Net Carrying Amount	$ 3,977	4,093
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 months 6 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(4,677)	(4,513)
Net Carrying Amount	$ 347	511
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	3 years 3 months 18 days
Gross Carrying Amount	$ 2,440	2,440
Accumulated Amortization	(1,590)	(1,528)
Net Carrying Amount	$ 850	912
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	5 years 1 month 6 days
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(77)	(74)
Impairment	(760)	(760)
Net Carrying Amount	$ 57	60
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	4 years 8 months 12 days
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(762)	(727)
Net Carrying Amount	$ 668	703
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	3 years 1 month 6 days
Gross Carrying Amount	$ 684	684
Accumulated Amortization	(246)	(213)
Net Carrying Amount	$ 438	$ 471