Note 12 - Per Share Calculations (Details Textual) - shares shares in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Non Vested Stock and Outstanding Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2.8	3.4
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		3.3
Out of the Money Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	6.9	3.2