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Note 18 - Income Taxes - Income (Loss) Before Income Taxes Earned by Tax Jurisdictions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Income (loss) from continuing operations | $ 70,369 | $ 48,033 | $ 39,510
CANADA |  |  |
Income (loss) from continuing operations | 31,307 | 19,557 | 16,715
UNITED STATES |  |  |
Income (loss) from continuing operations | 26,072 | 19,962 | 11,077
Other Countries [Member] |  |  |
Income (loss) from continuing operations | $ 12,990 | $ 8,516 | $ 11,718

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