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Note 14 - Treasury Stock - Repurchases of Common Stock (Details) - $ / shares | 1 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2021 | Sep. 30, 2021 | Aug. 31, 2021 | Oct. 31, 2021 | Oct. 31, 2020
Approximate dollar value of shares that may yet be purchased under the plans or programs (in shares) | 2,505,216 | 0 | 0 | 2,505,216 |
Publicly Announced Share Repurchase Program [Member] |  |  |  |  |
Total number of shares purchased (in shares) | 58,528 | 0 | 0 |  |
Treasury Stock [Member] |  |  |  |  |
Total number of shares purchased (in dollars per share) | $ 8.45 | $ 0 | $ 0 |  |
Total number of shares purchased (in shares) | 58,528 | 0 |  | 58,528 | (0)

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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