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Note 13 - Per Share Calculations (Details Textual) - shares
shares in Thousands
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Non Vested Stock and Outstanding Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 300   100
Convertible Debt Securities [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   33 400
Exchangeable Note Unit Rate Stated Percentage   6.00% 6.00%
Out of the Money Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 200 200 200