CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jul. 31, 2015	Apr. 30, 2015
Allowance for Doubtful Accounts Receivable, Current	$ 347,446	$ 294,719
Preferred Stock, Par Value Per Share	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock, Shares Issued
Preferred Stock, Shares Outstanding
Common Stock, Par Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	42,375,069	42,333,945
Common Stock, Shares, Outstanding	42,375,069	42,333,945