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Note 11 - Accrued Liabilities (Tables) | 12 Months Ended
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Jan. 31, 2020
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  |  | January 31, |  |  |  | January 31, |
|  |  | 2020 |  |  |  | 2019 |
Accrued compensation and benefits |  |  | 20,613 |  |  |  | 16,771 |
Accrued professional fees |  |  | 1,010 |  |  |  | 1,137 |
Other accrued liabilities |  |  | 13,253 |  |  |  | 11,484 |
|  |  | 34,876 |  |  |  | 29,392 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration