Income Taxes - (Details) - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Income Tax Disclosure [Abstract]
Foreign, Current	$ 0	$ 0
Foreign, Deferred	0	0
U.S. Federal, Current	0	0
U.S. Federal, Deferred	(4,503,473)	11,522,597
U.S. State & Local, Current	0	0
U.S. State & Local, Deferred	(504,613)	1,085,319
Change in valuation allowance	7,509,295	(12,607,916)
Income tax provision (benefit)	$ (2,501,209)	$ 0