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Note 14 - Preferred Stock (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jul. 12, 2005
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Oct. 31, 2020
Preferred Stock, Shares Issued, Total (in shares)   5,600   5,600   5,600
Preferred Class A [Member]            
Preferred Stock, Shares Issued, Total (in shares) 5,600          
Preferred Stock, Dividend Rate, Percentage 7.625%          
Preferred Stock, Liquidation Preference Per Share (in dollars per share) $ 25,000          
Preferred Stock, Depositary Shares, Number of Shares of Preferred Stock in Each Depositary Share (in shares) 0.001          
Payments of Dividends, Total   $ 0 $ 0 $ 0 $ 0