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Subsequent Events	6 Months Ended
Subsequent Events	Jan. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE K — Subsequent Events On February 16, 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 April 29, 2016, to shareholders of record at the close of business on April 8, 2016. On February 16, 2016, the Company's Board of Directors also authorized an increase in the Company’s share repurchase program, authorizing the repurchase of up to two million shares of the Company’s Class A Common Stock available for repurchase as of that date, inclusive of the shares in the existing share buyback program. The plan may be implemented by purchasing shares in the open market or in privately negotiated transactions, with repurchased shares available for use in connection with the Company's stock-based compensation plans and for other corporate purposes.