CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2017	Oct. 31, 2016
Trade accounts receivable, allowance for doubtful accounts	$ 72	$ 62
Common stock, authorized	20,000,000	20,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	8,852,246	8,835,483
Common stock, shares outstanding	8,852,246	8,835,483