LEASE COMMITMENTS (Details) - USD ($)	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2022
Other Commitments [Line Items]
Operating lease, right-of-use assets	$ 84,000	$ 109,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Operating Lease, Liability	$ 86,000	$ 113,000
Operating Leases, Rent Expense	114,000	$ 113,000
Present value of lease liabilities	$ 84,000
Weighted average remaining lease term of operating lease	1 year	1 year 2 months 12 days
Weighted average discount rate of operating lease	5.50%	5.50%
Minimum [Member]
Other Commitments [Line Items]
Non-cancelable operating lease term (in years)	2 years
Maximum [Member]
Other Commitments [Line Items]
Non-cancelable operating lease term (in years)	5 years
Subsequent Event [Member]
Other Commitments [Line Items]
Remaining operating lease payments			$ 84,000