Property and Equipment (Schedule Of Depreciation And Amortization Expense) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Property and equipment:
Depreciation and amortization Expense	$ 131,669	$ 123,906	$ 256,751	$ 259,054
Software amortization Expense	$ 112,522	$ 112,888	$ 220,129	$ 237,067