Note 5 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Effective Income Tax Rate Reconciliation, Percent, Total	40.00%	67.00%	50.00%	40.00%
Undistributed Earnings of Foreign Subsidiaries	$ 0.6		$ 0.6

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

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