v3.26.1
Note 15 - Common Stock (Details Textual)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Feb. 27, 2026
USD ($)
Jul. 31, 2026
USD ($)
Jul. 31, 2026
USD ($)
Item
$ / shares
shares
Jul. 31, 2025
USD ($)
$ / shares
shares
Apr. 11, 2025
USD ($)
Jan. 11, 2018
Aug. 15, 2008
Class of Stock [Line Items]              
Common Stock Dividends Percent of Increase from Class A to Class B   110.00% 110.00%        
Conversion of Stock From Class B to Class A Conversion Ratio   1          
Shareholder Ownership Percentage of Increase           50.00%  
Number of Rights             1
Minimum [Member]              
Class of Stock [Line Items]              
Shareholder Ownership Percentage           5.00%  
Common Class A [Member]              
Class of Stock [Line Items]              
Common Stock Voting Rights Votes per Share Number | Item     1        
Shareholder Ownership Percentage             4.90%
Shareholders Pre Existing Ownership Percentage           5.00%  
Shareholders Current Ownership Percentage           5.00%  
Shareholders Ownership Percentage on Transfers           5.00%  
Shareholders Ownership Percentage Threshold           5.00%  
Share Repurchase Program, Remaining Authorized, Amount   $ 57.9 $ 57.9        
Stock Repurchase Program, Authorized Amount $ 67.4       $ 30.6    
Stock Repurchase Program, Authorized Amount Incremental Increase $ 50.0            
Common Class B [Member]              
Class of Stock [Line Items]              
Common Stock Voting Rights Votes per Share Number | Item     10        
Common Stock Outstanding [Member] | Common Class A [Member]              
Class of Stock [Line Items]              
Treasury Stock, Shares, Acquired (in shares) | shares     175,905 257,908      
Treasury Stock, Value, Acquired, Cost Method     $ 18.5 $ 30.1      
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares     $ 104.98 $ 116.7