INCOME TAXES (STATUTORY RATE RECONCILIATION) (Details) - USD ($)	12 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Income Tax Reconciliation
Computed tax expense at statutory rates	$ (405,000)	$ (144,000)
Permanent differences	11,000	6,000
State tax and credits	(49,000)	(18,000)
Provision to return adjustment	6,000	4,000
Impact of federal rate change	467,000
Increase in valuation allowance	651,000
Total income tax provision (benefit)	$ 681,000	$ (152,000)