Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Jan. 31, 2018	Oct. 31, 2017
Accounts receivable, trade, reserve	$ 262,511	$ 330,720
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	21,960,229	21,960,229
Common stock, shares outstanding (in shares)	21,358,411	21,358,411
Treasury stock, at cost, shares (in shares)	601,818	601,818