Income Taxes - Income Tax Expense (Details) - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Current:
Federal	$ 0	$ 0
State	(187,000)	3,000
Total Current	(187,000)	3,000
Deferred:
Federal	0	0
State	0	0
Total Deferred	0	0
Total income tax expense	$ (187,000)	$ 3,000