CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2018	Oct. 31, 2017
Trade accounts receivable, allowance for doubtful accounts	$ 71	$ 73
Common stock, authorized	20,000,000	20,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	8,974,297	8,872,246
Common stock, shares outstanding	8,974,297	8,872,246