Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $)	6 Months Ended
	Oct. 31, 2013
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 1	$ (2,111,228)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 2	(325,105)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 3	(3,336,519)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 4	542,433
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 5	42,007,439
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 6	41,592,776
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 7	41,971,160
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 8	$ 41,159,949
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 9	(0.05)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 10	(0.01)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 11	(0.08)
Earnings (loss) Per Common Share Schedule Of Earnings Per Share, Basic And Diluted 12	0.01