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INCOME TAXES (NARRATIVE) (Details) - USD ($)			4 Months Ended	8 Months Ended	12 Months Ended
INCOME TAXES (NARRATIVE) (Details) - USD ($)	Dec. 22, 2017	Oct. 31, 2016	Apr. 30, 2018	Dec. 31, 2017	Apr. 30, 2018	Apr. 30, 2017
INCOME TAXES
Federal statutory income tax rate (as a percent)	35.00%		21.00%	34.00%
Blended statutory tax rate					30.40%
Impact of federal rate change					$ 467,000
Federal tax credit carryforwards			$ 68,000		68,000
Increase in valuation allowance					651,000
Increase in income tax expense					651,000
Valuation allowance			1,088,000		1,088,000	$ 437,000
Accrued interest and penalties			$ 0		$ 0	$ 0
Extension of lease term		5 years			12 months	12 months