Quarterly report pursuant to sections 13 or 15(d)

Stock Based Compensation (Detail) - Information about stock options outstanding under the 2003 Share Plan

Stock Based Compensation (Detail) - Information about stock options outstanding under the 2003 Share Plan (USD $)	9 Months Ended
	Jul. 31, 2012
Range Of Exercise Prices $0.25 - $0.65
Options Outstanding	4,510,970
Options Weighted Average Remaining Contractual Life (in years)	2 years 299 days
Options Weighted Average Exercise Price (in Dollars per share)	$ 0.57
Range Of Exercise Prices $0.68 - $0.84
Options Outstanding	4,759,075
Options Weighted Average Remaining Contractual Life (in years)	4 years 7 days
Options Weighted Average Exercise Price (in Dollars per share)	$ 0.79
Range Of Exercise Prices $0.86 - $0.92
Options Outstanding	4,035,000
Options Weighted Average Remaining Contractual Life (in years)	5 years 40 days
Options Weighted Average Exercise Price (in Dollars per share)	$ 0.89
Range Of Exercise Prices $1.04 - $1.46
Options Outstanding	2,985,000
Options Weighted Average Remaining Contractual Life (in years)	3 years 167 days
Options Weighted Average Exercise Price (in Dollars per share)	$ 1.10

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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