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Note 10 - Income Taxes (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2022 | Oct. 31, 2021
Income Tax Expense (Benefit), Total | $ 37,000 | $ 59,000 | $ 379,000 | $ 111,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total | (3,276,000) | (2,020,000) | (7,497,000) | (8,408,000)
Deferred Tax Liabilities, Undistributed Foreign Earnings | 0 |  | 0 |
Unrecognized Tax Benefits, Ending Balance | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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