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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Feb. 28, 2014
Aug. 31, 2013
Feb. 28, 2013
Condensed Consolidated Balance Sheets [Abstract]      
Receivables, allowance $ 3,520 $ 2,853 $ 1,915
Preferred stock, par value $ 1 $ 1 $ 1
Preferred stock, authorized 2,000,000 2,000,000 2,000,000
Preferred stock, issued 0 0 0
Common stock, par value $ 1 $ 1 $ 1
Common stock, authorized 25,000,000 25,000,000 25,000,000
Common stock, issued 18,633,000    
Treasury stock, shares 5,777,000