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Note 17 - Stock-based Compensation Plans - Summary of Nonvested Share (Details) - $ / shares | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | 381,859 | 367,173 | 272,144
Granted, Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 10.19 | $ 8.99 | $ 7.10
Shareholder-Approved Stock Option Plan [Member] |  |  |
Stock Options Outstanding (in shares) | 409,653 | 325,218 |
Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 8.03 | $ 6.18 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | 381,859 | 367,173 |
Granted, Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 10.19 | $ 8.99 |
Vested (in shares) | (266,238) | (259,269) |
Vested, Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 8.19 | $ 6.96 |
Forfeited (in shares) | (23,619) | (23,469) |
Forfeited, Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 4.87 | $ 7.69 |
Stock Options Outstanding (in shares) | 501,655 | 409,653 | 325,218
Weighted- Average Grant-Date Fair Value per Share (in dollars per share) | $ 9.52 | $ 8.03 | $ 6.18

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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