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Goodwill and Other Intangible Assets - Schedule of Net Carrying Amount (Detail) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |  |
Goodwill, Gross Carrying Amount | $ 7,060 | $ 7,060
Goodwill, Accumulated Impairment | (7,060) | (7,060)
Goodwill, Net Carrying Amount | 0 | 0
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 18,692 | 18,253
Accumulated Amortization | (11,477) | (10,743)
Accumulated Impairment | (760) | (760)
Net Carrying Amount | $ 6,455 | 6,750
Proprietary rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 6 years 4 months 24 days |
Gross Carrying Amount | $ 8,220 | 7,781
Accumulated Amortization | (3,920) | (3,688)
Net Carrying Amount | $ 4,300 | 4,093
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 4 months 24 days |
Gross Carrying Amount | $ 5,024 | 5,024
Accumulated Amortization | (4,748) | (4,513)
Net Carrying Amount | $ 276 | 511
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 3 years 1 month 6 days |
Gross Carrying Amount | $ 2,440 | 2,440
Accumulated Amortization | (1,653) | (1,528)
Net Carrying Amount | $ 787 | 912
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 4 years 9 months 18 days |
Gross Carrying Amount | $ 894 | 894
Accumulated Amortization | (80) | (74)
Accumulated Impairment | (760) | (760)
Net Carrying Amount | $ 54 | 60
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 4 years 4 months 24 days |
Gross Carrying Amount | $ 1,430 | 1,430
Accumulated Amortization | (798) | (727)
Net Carrying Amount | $ 632 | 703
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 2 years 9 months 18 days |
Gross Carrying Amount | $ 684 | 684
Accumulated Amortization | (278) | (213)
Net Carrying Amount | $ 406 | $ 471

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