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Earnings Per Common Share (Schedule Of Weighted Average Number Of Shares) (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013
Earnings Per Common Share [Abstract]
Weighted-average common shares outstanding, basic	15,202	15,585	15,241	15,639
Weighted-average dilutive securities	70	94	78	105
Weighted-average common shares outstanding, diluted	15,272	15,679	15,319	15,744

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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