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Subsequent Events	6 Months Ended
Subsequent Events	Jan. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	NOTE K — Subsequent Events On February 22, 2017, the Board of Directors declared a quarterly cash dividend to shareholders of the Company’s Class A and Class B Common Stock of $0.2050 per share payable on April 28, 2017, to shareholders of record at the close of business on April 7, 2017.