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Note 16 - Stock Option Plans (Details Textual) - USD ($)
12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Share-Based Payment Arrangement, Expense $ 261,000 $ 654,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 5.01
Excess Tax Benefit from Share-Based Compensation $ 0 $ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 68,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) (0) 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value $ 517,000 $ 1,400,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) 75,000 110,000
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount $ 243,000  
Share-Based Payment Arrangement, Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 10 years  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) 1 year  
Restricted Stock [Member]    
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount $ 0