Stock-based compensation and equity transactions (Tables)

3 Months Ended

Jan. 31, 2017

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Summary of Status of Options Granted under Stock Option Plans and Changes in Options Outstanding

A summary of the status of the options granted under the Company’s stock option plans as of January 31, 2017 and the changes in options outstanding during the three months then ended is presented in the table that follows:

			Weighted
			Average
	Shares		Exercise Price
Outstanding at November 1, 2016		1,007,851	$	4.07
Options granted		309,356	$	1.50
Options canceled or expired		(143,019)	$	3.77
Options outstanding at January 31, 2017		1,174,188	$	3.43
Options exercisable at January 31, 2017		738,444	$	3.71
Options vested and expected to vest at January 31, 2017		1,172,141	$	3.43