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Subsequent Events	9 Months Ended
Subsequent Events	Apr. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE L — Subsequent Events On May 18, 2016, the Board of Directors declared a quarterly cash dividend to shareholders of the Company’s Class A and Class B Common Stock of $0.2025 per share payable on July 29, 2016, to shareholders of record at the close of business on July 8, 2016.