Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Stock-based Compensation (Details Textual)

v3.24.1.1.u2
Note 9 - Stock-based Compensation (Details Textual)
$ / shares in Units, $ in Millions
3 Months Ended
Jun. 30, 2021
shares
Apr. 30, 2024
USD ($)
$ / shares
shares
May 01, 2024
shares
Share-Based Payment Arrangement, Option [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $   $ 1.7  
Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price (in dollars per share) | $ / shares   $ 67.23  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   1 year 1 month 6 days  
Restricted Stock Units (RSUs) [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $   $ 28.9  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   2 years 4 months 24 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Right To Receive Shares   1  
Restricted Stock Units (RSUs) [Member] | Minimum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years  
Restricted Stock Units (RSUs) [Member] | Maximum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   4 years  
Market-based Restricted Stock Units (MBRSUs) [Member]      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $   $ 3.0  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   1 year 2 months 12 days  
Market-based Restricted Stock Units (MBRSUs) [Member] | Minimum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years  
Market-based Restricted Stock Units (MBRSUs) [Member] | Maximum [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   4 years  
The 2020 Omnibus Incentive Plan [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | shares 655,295    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Annual Increase, Percentage 5.00%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | shares   590,444  
The 2020 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 4 years    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 10 years    
The 2020 Omnibus Incentive Plan [Member] | Days Following Termination of Employment or Service [Member] | Share-Based Payment Arrangement, Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 90 days    
The 2020 Omnibus Incentive Plan [Member] | Months Following Optionees Death or Disability [Member] | Share-Based Payment Arrangement, Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 12 months    
Inducement Plan [Member] | Forecast [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | shares     200,000