OTHER ASSETS - Additional Information (Details) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Depreciation	$ 127,000	$ 126,000
Operating Lease, Payments	52,000
Operating Lease, Right-of-Use Asset	175,000
Property, Plant and Equipment [Member]
Depreciation	4,000	$ 4,000
Right of use assets
Depreciation	$ 23,000