Stock Compensation Information (Summary Of Stock Option Activity) (Details) (USD $)	6 Months Ended			12 Months Ended
	Oct. 31, 2014		Oct. 31, 2013	Apr. 30, 2014
Stock Compensation Information [Abstract]
Shares, Outstanding at April 30, 2014	1,254,629
Shares, Granted	201,922
Shares, Exercised			0
Shares, Cancelled/expired	(307,255)
Shares, Outstanding at October 31, 2014	1,149,296			1,254,629
Shares, Exercisable at October 31, 2014	769,779
Weighted average exercise price, Outstanding at April 30, 2014	$ 2.38
Weighted average exercise price, Exercised
Weighted average exercise price, Outstanding at October 31, 2014	$ 2.32			$ 2.38
Weighted average exercise price, Exercisable at October 31, 2014	$ 2.86
Weighted average remaining contractual term (in years), Outstanding	6 years 8 months 5 days			6 years 9 months 26 days
Weighted average remaining contractual term (in years), Exercisable at October 31, 2014	5 years 5 months 23 days
Aggregate intrinsic value, Outstanding		[1]		$ 41,972	[1]

[1] Aggregate intrinsic value is defined as the difference between the current market value and the exercise price and is estimated using the closing price of our common stock on the last trading day of the periods ended as of the dates indicated.