Stockholders' Equity - Schedule of Changes in Restricted Stock Units (Detail) - shares	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Schedule Of Restricted Stock Granted [Line Items]
Non-vested, beginning of year (shares)	1,121,336
Granted (shares)	9,990,000
Vested (shares)	(1,016,335)
Forfeited (shares)	(183,334)
Non-vested, end of year (shares)	9,911,667	1,121,336
Restricted Stock Unit [Member]
Schedule Of Restricted Stock Granted [Line Items]
Non-vested, beginning of year (shares)	175,000	195,000	801,667
Granted (shares)	105,000	105,000	105,000
Vested (shares)	(80,000)	(95,000)	(685,000)
Forfeited (shares)	(25,000)	(30,000)	(26,667)
Non-vested, end of year (shares)	175,000	175,000	195,000
Non-performance Based Restricted Stock Units [Member]
Schedule Of Restricted Stock Granted [Line Items]
Non-vested, beginning of year (shares)	0
Granted (shares)	675,676
Vested (shares)	(281,532)
Forfeited (shares)	(394,144)
Non-vested, end of year (shares)	0	0