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Note 17 - Income Taxes - Income Tax Expense (Recovery) Incurred by Jurisdictions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2018 | Jan. 31, 2017 | Jan. 31, 2016
Current | $ 6,572 | $ 4,022 | $ 1,443
Deferred tax expense | 1,297 | 3,640 | 5,765
Deferred income tax expense (recovery) | 7,869 | 7,662 | 7,208
CANADA |  |  |
Current | 1,243 | 447 | 94
Deferred tax expense | 2,051 | 4,251 | 3,493
UNITED STATES |  |  |
Current | 494 | 873 | 70
Deferred tax expense | 1,876 | 1,272 | 800
Other Countries [Member] |  |  |
Current | 4,835 | 2,702 | 1,279
Deferred tax expense | $ (2,630) | $ (1,883) | $ 1,472

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