INCOME TAXES (Details 3) - USD ($)	Apr. 30, 2016	Apr. 30, 2015
Deferred tax assets:
Allowance for doubtful accounts	$ 36,156	$ 34,392
Bonus and vacation accruals	53,727	79,274
Non-qualified stock options	1,135,090	144,972
Federal benefit for foreign tax credit	0	265,600
Accruals	0	0
Valuation allowance	(1,224,973)	(524,238)
Deferred tax assets-current	0	0
Intangible assets	0	0
Goodwill	0	0
Capital loss carryforward	4,126,345	3,884,389
Property and equipment	43,948	26,434
Valuation allowance	(16,760,869)	(16,173,157)
Net operating loss carryforward	12,590,576	12,262,334
Deferred tax assets-long term	0	0
Net deferred tax assets (liabilities)	$ 0	$ 0