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Commitments and Contingencies (Tables)
12 Months Ended
Aug. 31, 2012
Commitments and Contingencies [Abstract]  
Schedule of Future Minimum Payments for Operating Leases
                                                 
    2013     2014     2015     2016     2017     Thereafter  

Operating leases

  $     1,468     $     802     $     361     $     198     $     179     $     125