Stock-based Compensation and Equity Transactions - Additional Information (Detail) (USD $)	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, expiration period	5 years
Weighted average fair value of stock options under Black-Scholes pricing model	$ 1.01	$ 1.41
Proceeds from exercise of stock options	$ 1,313,723	$ 22,741
Weighted average remaining life of options outstanding	3 years 5 months 1 day
Weighted average remaining contractual life of options exercisable	2 years 11 months 12 days
Weighted average life of options vested and expected to vest	3 years 5 months 1 day
Aggregate intrinsic value of options outstanding	5,122,093
Aggregate intrinsic value of options exercisable	4,188,068
Aggregate intrinsic value of options vested and expected to vest	4,243,178
Non-vested stock-based arrangements yet to be recognized	369,679
Stock based arrangements yet to be recognized, weighted average period expected to be recognized	3 years 2 months 12 days
Stock-based compensation expense	33,108	67,187
Non-employee director annual receivable	25,000
Options granted for each non-employee director	8,405
Value of stock option issued	12,500
Fair value of stock option	$ 1.49
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted during period	171,900
Issuance of common stock for exercise of stock option	489,435
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock for exercise of stock option	489,435
Cost of Sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	9,464	13,913
Selling and general expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 23,644	$ 53,274