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Comprehensive Income	3 Months Ended
Comprehensive Income	Jul. 31, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Comprehensive Income	Comprehensive Income We have not included condensed consolidated statements of comprehensive income in the accompanying unaudited Condensed Consolidated Financial Statements since comprehensive income and net earnings presented in the accompanying Condensed Consolidated Statements of Operations would be substantially the same.