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NOTE C - EARNINGS PER SHARE (Details) - Schedule of Earnings Per Share, Basic and Diluted - shares
3 Months Ended 6 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2017
Oct. 31, 2016
Weighted average shares outstanding:        
Basic 8,834,945 8,780,633 8,830,486 8,771,494
Diluted 8,834,945 8,780,633 8,830,486 8,771,494