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NOTE C - EARNINGS PER SHARE (Details) - shares
3 Months Ended 6 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2018
Oct. 31, 2017
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 780,000 1,353,750 968,500 1,353,750
Weighted Average Number Diluted Shares Outstanding Adjustment 208,836 117,209 161,028 129,245