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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

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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