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Share Repurchases	12 Months Ended
	Aug. 31, 2015
Share Repurchases [Abstract]
Share Repurchases	S. SHARE REPURCHASES On January 3, 2014, the Company announced that its Board of Directors authorized a share repurchase program of up to $150.0 million of common stock, effective as of January 2, 2014, through January 2, 2016.  On July 22, 2015, the Company announced that its Board of Directors increased its outstanding share repurchase authorization by $100.0 million.  Under the program, shares may be repurchased in privately negotiated and/or open market transactions as well as under formalized trading plans in accordance with the guidelines specified under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. During the twelve months ended August 31, 2015, the Company repurchased 1,198,089 shares for an aggregate purchase price of $96.9 million.  During the twelve months ended August 31, 2014, the Company repurchased 497,899 shares of common stock for an aggregate purchase price of $41.0 million.  The remaining amount available under the repurchase program was $112.1 million as of August 31, 2015.

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The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.

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