Provision (benefit) for income taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Current:
Federal	$ (332)	$ 300
State	(13)	4
Current income tax expense (benefit)	(345)	304
Deferred:
Federal	(179)	(126)
State	(128)	(38)
Deferred income tax expense (benefit)	(307)	(164)
Provision for income taxes	$ (652)	$ 140