Earnings per Share and Stock-based Compensation - Reconciliation of Denominator of Each Net Loss per Share (Detail) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Earnings per Share and Stock Based Compensation [Abstract]
Shares used in computing basic net loss/income per share (shares)	171,343	170,475	171,188	170,105
Dilutive effect of stock options and restricted stock (shares)	0	0	0	0
Dilutive effect of stock warrants (shares)	0	0	0	0
Shares used in computing diluted net loss/income per share (shares)	171,343	170,475	171,188	170,105