Note 5 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2023	Apr. 30, 2022
Effective Income Tax Rate Reconciliation, Percent	207.70%	455.90%
Undistributed Earnings of Foreign Subsidiaries	$ 0.6

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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