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EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Earnings Per Share [Abstract]    
Net income from continuing operations $ 23,672 $ 20,647
Less: Allocation of income to unvested stockholders (334) (333)
Net earnings available to common stockholders $ 23,338 $ 20,314
Basic weighted average shares outstanding 29,890 29,791
Add dilutive effect of stock options (two-class method) 6 8
Diluted average shares outstanding 29,896 29,799
Basic income per share $ 0.78 $ 0.68
Diluted income per share $ 0.78 $ 0.68