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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 |

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