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Note 15 - Common Stock (Details Textual)
shares in Thousands
3 Months Ended 9 Months Ended
Mar. 29, 2019
$ / shares
shares
Jul. 31, 2020
$ / shares
shares
Jul. 31, 2020
$ / shares
shares
Oct. 31, 2019
$ / shares
Jan. 11, 2018
Aug. 15, 2008
Jul. 03, 2001
shares
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   1        
Shareholder Ownership Percentage of Increase         50.00%    
Minimum [Member]              
Shareholder Ownership Percentage         5.00%    
Reverse Stock Split [Member]              
Stockholders' Equity Note, Stock Split, Conversion Ratio 25            
Number of Fractional Shares Issued (in shares) 0            
Common Class A [Member]              
Common Stock Voting Rights Votes per Share Number     1        
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.01 $ 0.01 $ 0.01 $ 0.01      
Shareholder Ownership Percentage           4.90%  
Number of Rights           1  
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%    
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)             200
Stock Repurchased During Period, Shares (in shares)   0 0        
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)   22 22        
Common Class A [Member] | Reverse Stock Split [Member]              
Stockholders' Equity Note, Stock Split, Conversion Ratio 25            
Common Class B [Member]              
Common Stock Voting Rights Votes per Share Number     10        
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.01 $ 0.01 $ 0.01 $ 0.01      
Common Class B [Member] | Reverse Stock Split [Member]              
Stockholders' Equity Note, Stock Split, Conversion Ratio 25