Note 10. Common Stock and Earnings Per Share (Detail) - Shares of Common Stock Outstanding	3 Months Ended
Nov. 30, 2011	Nov. 30, 2010
Balance	45,055,219	46,024,000
Common stock issued for employee stock plans	209,000	626,000
Repurchase of common stock	(150,000)	(303,000)
Balance	45,113,931	46,347,000

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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