Intangible Assets, Identifiable Intangible Assets (Details) $ in Thousands |
6 Months Ended |
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Jul. 31, 2021
USD ($)
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| Finite-Lived Intangible Assets, Net [Abstract] | |
| Original Gross Carrying Amount | $ 9,900 |
| Accumulated Impairment | 2,587 |
| Accumulated Amortization | 7,095 |
| Net Carrying Amount | $ 218 |
| Technology [Member] | |
| Finite-Lived Intangible Assets, Net [Abstract] | |
| Weighted Average Amortization Period | 60 months |
| Original Gross Carrying Amount | $ 6,700 |
| Accumulated Impairment | 2,587 |
| Accumulated Amortization | 4,048 |
| Net Carrying Amount | $ 65 |
| Trade Names and Trademarks [Member] | |
| Finite-Lived Intangible Assets, Net [Abstract] | |
| Weighted Average Amortization Period | 60 months |
| Original Gross Carrying Amount | $ 3,200 |
| Accumulated Impairment | 0 |
| Accumulated Amortization | 3,047 |
| Net Carrying Amount | $ 153 |
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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