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Note 2 - Basis of Presentation (Details Textual) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2017 USD ($) | Jan. 31, 2016 USD ($) | Jan. 31, 2015 USD ($)
Foreign Currency Transaction Gain (Loss), before Tax | $ 100 | $ (200) | $ 1,400
Goodwill, Impairment Loss | 0 | 0 | 0
Impairment of Long-Lived Assets Held-for-use | $ 0 | $ 0 | $ 0
Employee Stock Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 5 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 7 years |  |
Performance Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |
Deferred Share Unit Plan [Member] |  |  |
Base Annual Fee, Percent |  | 50.00% |
Computer Equipment [Member] |  |  |
Property Plant and Equipment, Percent Declining Balance Depreciation | 30.00% |  |
Furniture and Fixtures [Member] |  |  |
Property Plant and Equipment, Percent Declining Balance Depreciation | 20.00% |  |
Minimum [Member] | Employee Stock Option [Member] | Directors and Officers [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Minimum [Member] | Cash-Settled Restricted Share Plan [Member] |  |  |
Cash Settled Restricted Share Units, Vesting Period | 3 years |  |
Maximum [Member] | Employee Stock Option [Member] | Directors and Officers [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 5 years |  |
Maximum [Member] | Cash-Settled Restricted Share Plan [Member] |  |  |
Cash Settled Restricted Share Units, Vesting Period | 5 years |  |
Customer Relationships [Member] | Minimum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Customer Relationships [Member] | Maximum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |
Existing Technology [Member] | Minimum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Existing Technology [Member] | Maximum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 12 years |  |
Trade Names [Member] | Minimum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 1 year |  |
Trade Names [Member] | Maximum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |
Noncompete Agreements [Member] | Minimum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Noncompete Agreements [Member] | Maximum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 12 years |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |
Number of Major Customers | 0 | 0 |

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