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Note 14 - Capital Stock (Details Textual)
$ / shares in Units, $ in Thousands
12 Months Ended
Jul. 12, 2005
$ / shares
shares
Oct. 31, 2018
USD ($)
shares
Oct. 31, 2017
USD ($)
shares
Oct. 31, 2016
USD ($)
Dec. 05, 2008
Aug. 15, 2008
Aug. 04, 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            
Shareholder Ownership Percentage of Increase             50.00%  
Preferred Stock, Shares Issued, Total   5,600 5,600          
Defined Benefit Plan, Plan Assets, Contributions by Employer | $   $ 7,000 $ 6,800 $ 6,600        
Minimum [Member]                
Shareholder Ownership Percentage             5.00%  
Common Class A [Member]                
Common Stock Voting Rights Votes per Share Number   1            
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               4,000,000
Stock Repurchased During Period, Shares   0            
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased   500,000            
Common Class B [Member]                
Common Stock Voting Rights Votes per Share Number   10            
Preferred Class A [Member]                
Preferred Stock, Shares Issued, Total 5,600              
Preferred Stock, Dividend Rate, Percentage 7.625%              
Preferred Stock, Liquidation Preference Per Share | $ / shares $ 25,000              
Preferred Stock, Depositary Shares, Number of Shares of Preferred Stock in Each Depositary Share 0.001              
Payments of Dividends, Total | $   $ 0 $ 0 $ 0