Note 16 - Income Taxes (Details Textual) - USD ($)	Jan. 31, 2022	Jan. 31, 2021
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	833,000	$ 718,000
Deferred Tax Assets, Valuation Allowance, Total	23,650,000	20,156,000
Tax Credit Carryforward, Amount	165,000
Unrecognized Tax Benefits, Ending Balance	$ 0	$ 0