INCOME TAXES (Details) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
INCOME TAXES
Income tax expense (benefit)	$ 111,000	$ (15,000)
Effective Income Tax Rate, Percent	19.90%
Expected change in the amount of unrecognized tax benefit, accrued interest or penalties within the next twelve months	$ 0