Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Stock-based Compensation (Details Textual)

v3.22.2.2
Note 15 - Stock-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2022
Jan. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Oct. 31, 2019
Restricted Stock [Member]            
Share-Based Payment Arrangement, Expense $ 1.2   $ 1.1 $ 3.7 $ 4.6  
Share-Based Payment Arrangement, Option [Member]            
Share-Based Payment Arrangement, Expense $ 0.2   $ 0.2 $ 0.5 $ 0.6  
Market Based Award [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Granted (in shares) 0 69,491        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 73.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 0.50%          
Closing Price of $6.00 for 30 Consecutive Trading Days [Member] | The $6 Market/Time- Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share) $ 6.00     $ 6.00    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       33.33%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)       3 years    
Closing Price of $8.00 for 30 Consecutive Trading Days [Member] | The $8 Market/Time- Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share) 8.00     $ 8.00    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       33.33%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)       3 years    
Closing Price of $10.00 for 30 Consecutive Trading Days [Member] | The $10 Market/Time- Based [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share) $ 10.00     $ 10.00    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       33.33%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)       3 years    
The 2018 Omnibus Incentive Plan [Member] | UNITED KINGDOM            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in dollars per share)           $ 0.01