Stockholders' Equity - Schedule of Changes in Non-Vested Shares Under Option Excluding Performance Based Options (Detail) (USD $)	12 Months Ended
	Oct. 31, 2012
Nonvested Share Activity [Line Items]
Non-vested, beginning of year, Shares	7,356,508
Granted, Shares	375,000
Vested, Shares	(3,176,993)
Canceled, Shares	(132,343)
Non-vested, end of year, Shares	4,422,172
Non-vested, beginning of year, Wtd. Avg. Grant Date Fair Value	$ 1.81
Granted, Wtd. Avg. Grant Date Fair Value	$ 2.58
Vested, Wtd. Avg. Grant Date Fair Value	$ 1.72
Canceled, Wtd. Avg. Grant Date Fair Value	$ 2.41
Non-vested, end of year, Wtd. Avg. Grant Date Fair Value	$ 1.92