Goodwill and Other Intangible Assets - Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	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	18,253	19,688
Accumulated Amortization	(10,743)	(10,792)
Impairment	(760)	(760)
Net Carrying Amount	$ 6,750	8,136
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 years 2 months 12 days
Gross Carrying Amount	$ 7,781	9,247
Accumulated Amortization	(3,688)	(4,950)
Net Carrying Amount	$ 4,093	4,297
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	9 months 18 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(4,513)	(3,831)
Net Carrying Amount	$ 511	1,193
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	3 years 7 months 6 days
Gross Carrying Amount	$ 2,440	2,440
Accumulated Amortization	(1,528)	(1,277)
Net Carrying Amount	$ 912	1,163
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	5 years 3 months 18 days
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(74)	(63)
Impairment	(760)	(760)
Net Carrying Amount	$ 60	71
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	4 years 10 months 24 days
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(727)	(584)
Net Carrying Amount	$ 703	846
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	3 years 4 months 24 days
Gross Carrying Amount	$ 684	653
Accumulated Amortization	(213)	(87)
Net Carrying Amount	$ 471	$ 566