Goodwill and Other Intangible Assets - Schedule of Net Carrying Amount (Detail) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Gross Carrying Amount	$ 7,060	$ 7,060
Goodwill, Impairment	(4,529)	(4,529)
Goodwill, Net Carrying Amount	2,531	2,531
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,761	19,477
Accumulated Amortization	(10,308)	(8,982)
Net Carrying Amount	$ 9,453	10,495
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	7 years 1 month 28 days
Gross Carrying Amount	$ 9,293	9,303
Accumulated Amortization	(4,766)	(4,292)
Net Carrying Amount	$ 4,527	5,011
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	2 years 1 month 2 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(3,660)	(3,147)
Net Carrying Amount	$ 1,364	1,877
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	4 years 9 months
Gross Carrying Amount	$ 2,440	2,441
Accumulated Amortization	(1,215)	(1,028)
Net Carrying Amount	$ 1,225	1,413
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	6 years 7 months
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(60)	(52)
Net Carrying Amount	$ 834	842
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	6 years 2 months
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(548)	(441)
Net Carrying Amount	$ 882	989
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life	4 years 7 months 2 days
Gross Carrying Amount	$ 680	385
Accumulated Amortization	(59)	(22)
Net Carrying Amount	$ 621	$ 363