Goodwill and Other Intangible Assets - Schedule of Net Carrying Amount (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 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	19,741	19,734
Accumulated Amortization	(11,278)	(10,813)
Impairment	(760)	(760)
Net Carrying Amount	$ 7,703	8,161
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	6 years 9 months 28 days
Gross Carrying Amount	$ 9,299	9,293
Accumulated Amortization	(5,152)	(4,971)
Net Carrying Amount	$ 4,147	4,322
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	1 year 7 months 2 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(4,002)	(3,831)
Net Carrying Amount	$ 1,022	1,193
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	4 years 4 months
Gross Carrying Amount	$ 2,440	2,440
Accumulated Amortization	(1,339)	(1,277)
Net Carrying Amount	$ 1,101	1,163
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	6 years 1 month
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(66)	(63)
Impairment	(760)	(760)
Net Carrying Amount	$ 68	71
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	5 years 8 months
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(620)	(584)
Net Carrying Amount	$ 810	846
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	4 years 2 months 2 days
Gross Carrying Amount	$ 654	653
Accumulated Amortization	(99)	(87)
Net Carrying Amount	$ 555	$ 566