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Note 11 - Earnings Per Share - Calculation of Basic and Diluted Weighted Average Common Shares Used in Earnings Per Share Calculation (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Basic (in shares) 13,782 13,774 13,779 13,767
Total weighted average common share equivalents (in shares) 5 108 5 76
Diluted weighted average common shares outstanding (in shares) 13,787 13,882 13,784 13,843
Share-Based Payment Arrangement, Option [Member]        
Stock options (in shares) 0 79 0 58
Restricted Stock [Member]        
Stock options (in shares) 5 29 5 18