Note 14 - Preferred Stock (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
	Jul. 12, 2005	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015	Oct. 31, 2015	[1]
Preferred Class A [Member]
Payments of Dividends		$ 0	$ 0	$ 0	$ 0
Preferred Stock, Shares Issued	5,600
Preferred Stock, Dividend Rate, Percentage	7.625%
Preferred Stock, Liquidation Preference Per Share	$ 25,000
Preferred Stock, Depositary Shares, Number of Shares of Preferred Stock in Each Depositary Share	0.001
Preferred Stock, Shares Issued		5,600		5,600		5,600

[1] Derived from the audited balance sheet as of October 31, 2015.