8. INCOME TAXES (Details Narrative) - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Unrecognized tax benefits from uncertain tax positions	$ 0	$ 0
Income tax penalties or interest	0	0	$ 0
Income tax penalties or interest accrued	0	0
Net operating loss attributable to excess tax deductions on share-based compensation	5,956,000
Total deferred tax assets	168,395,000	$ 146,524,000
State and Local Jurisdiction [Member]
Net operating loss carry forward	$ 276,535,000
Operating loss carryforward expiration dates	2017
Domestic Country [Member]
Net operating loss carry forward	$ 384,857,000
Operating loss carryforward expiration dates	2019 through 2036