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Note 2 - Sale of a Subsidiary and Discontinued Operations - Held for Sale and Discontinued Operations (Details) (Parentheticals) - USD ($) $ in Thousands |  | 12 Months Ended
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Aug. 21, 2023 | Jan. 31, 2025 | Jan. 31, 2024
Klein Marine Services, Inc. [Member] |  |  |
Gain on sale of Klein | $ 2,300 | $ (0) | $ 2,343

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- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-1B + Details
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- Details
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