Goodwill and Other Intangible Assets - Schedule of Net Carrying Amount (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Jan. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Gross Carrying Amount	$ 7,060	$ 7,060
Goodwill, Impairment	(7,060)	(4,529)
Goodwill, Net Carrying Amount	0	2,531
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,719	19,688
Accumulated Amortization	(11,718)	(10,792)
Impairment	(760)	(760)
Net Carrying Amount	$ 7,241	8,136
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	6 years 7 months 6 days
Gross Carrying Amount	$ 9,265	9,247
Accumulated Amortization	(5,286)	(4,950)
Net Carrying Amount	$ 3,979	4,297
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	1 year 3 months 18 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(4,173)	(3,831)
Net Carrying Amount	$ 851	1,193
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	4 years
Gross Carrying Amount	$ 2,440	2,440
Accumulated Amortization	(1,401)	(1,277)
Net Carrying Amount	$ 1,039	1,163
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	5 years 9 months 18 days
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(69)	(63)
Impairment	(760)	(760)
Net Carrying Amount	$ 65	71
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	5 years 4 months 24 days
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(655)	(584)
Net Carrying Amount	$ 775	846
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	3 years 10 months 24 days
Gross Carrying Amount	$ 666	653
Accumulated Amortization	(134)	(87)
Net Carrying Amount	$ 532	$ 566