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Note 15 - Common Stock (Details Textual)
shares in Thousands
3 Months Ended
Mar. 29, 2019
$ / shares
shares
Jan. 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%        
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 0          
Common Class A [Member]            
Common Stock Voting Rights Votes per Share Number   1        
Common Stock, Par or Stated Value Per Share | $ / shares $ 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           200
Stock Repurchased During Period, Shares   0        
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased   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 | $ / shares $ 0.01 $ 0.01 $ 0.01      
Common Class B [Member] | Reverse Stock Split [Member]            
Stockholders' Equity Note, Stock Split, Conversion Ratio 25