Note 6 - Fair Values of Assets and Liabilities - Fair Values of Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)	Jul. 31, 2017	Oct. 31, 2016
Fair Value, Inputs, Level 1 [Member]
Unrealized gain on derivatives
Fair Value, Inputs, Level 2 [Member]
Unrealized gain on derivatives	2,055	(32,453)
Fair Value, Inputs, Level 3 [Member]
Unrealized gain on derivatives