Goodwill and Other Intangible Assets - Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
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	$ 2,531
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,734	19,477
Accumulated Amortization	(10,813)	(8,982)
Impairment	(760)
Net Carrying Amount	$ 8,161	10,495	$ 8,015
Proprietary rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	7 years
Gross Carrying Amount	$ 9,293	9,303
Accumulated Amortization	(4,971)	(4,292)
Net Carrying Amount	$ 4,322	5,011
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	1 year 9 months 16 days
Gross Carrying Amount	$ 5,024	5,024
Accumulated Amortization	(3,831)	(3,147)
Net Carrying Amount	$ 1,193	1,877
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	4 years 6 months
Gross Carrying Amount	$ 2,440	2,441
Accumulated Amortization	(1,277)	(1,028)
Net Carrying Amount	$ 1,163	1,413
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	6 years 3 months 16 days
Gross Carrying Amount	$ 894	894
Accumulated Amortization	(63)	(52)
Impairment	(760)
Net Carrying Amount	$ 71	842
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	5 years 10 months 16 days
Gross Carrying Amount	$ 1,430	1,430
Accumulated Amortization	(584)	(441)
Net Carrying Amount	$ 846	989
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	4 years 4 months
Gross Carrying Amount	$ 653	385
Accumulated Amortization	(87)	(22)
Net Carrying Amount	$ 566	$ 363