XML 25 R30.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Income Taxes [Abstract]    
Income tax expense $ 7,655 $ 1,520
Estimated effective income tax rate 34.20% 34.20%