Accrued expenses (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Oct. 31, 2016
Schedule of Accrued Liabilities [Line Items]
Wages payable	$ 743	$ 941
Accrued receipts	532	578
Earn-out liability	432	707
Other current liabilities	426	544
Totals	$ 2,133	$ 2,770