Stockholders' Investment	9 Months Ended
Stockholders' Investment	Apr. 30, 2011
Stockholders' Investment [Abstract]
Stockholders' Investment	NOTE G — Stockholders’ Investment In fiscal 2009, the Company’s Board of Directors authorized share repurchase plans for the Company’s Class A Nonvoting Common Stock. The share repurchase plans were implemented by purchasing shares in the open market or privately negotiated transactions, with repurchased shares available for use in connection with the Company’s stock-based plans and for other corporate purposes. The Company reacquired approximately 102,067 shares of its Class A Common Stock for $2.5 million in fiscal 2010 in connection with its stock repurchase plans. No shares were reacquired during the nine months ended April 30, 2011. As of April 30, 2011, there remained 204,133 shares to purchase in connection with this share repurchase plan.

Disclosures related to accounts comprising shareholders' equity, including other comprehensive income. Includes: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables; effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

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