Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $)	9 Months Ended
	Jan. 31, 2015
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 1	$ (525,083)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 2	(2,220,808)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 3	(3,027,240)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 4	(5,557,327)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 5	42,482,355
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 6	42,174,448
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 7	42,542,594
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 8	$ 42,038,923
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 9	(0.01)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 10	(0.05)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 11	(0.07)
Earnings (loss) Per Common Share (eps) Schedule Of Earnings Per Share, Basic And Diluted 12	(0.13)