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Restructuring (Tables)
 6 Months Ended
Jan. 31, 2014
Restructuring and Related Activities [Abstract]  
Schedule of restructuring-related costs
 
                         
      Three Months Ended     Six Months Ended
       January 31,       January 31,
      2014       2013       2014       2013
General and Administrative                              
Severance   $ 3,203     $ 286     $ 4,772     $ 572
Relocation     25       507       83       507
Total general and administrative   $ 3,228     $ 793     $ 4,855     $ 1,079
Yard Operations                              
Severance   $ -     $ -     $ -     $ -
Relocation     -       162       -       202
Total yard operations   $ -   $ 162     $ -     $ 202
Schedule of movements in severance accrual

 

                         
     

Balance at
July 31, 2013

    

Expense

    

Payments

    

Balance at
January 31, 2014
Severance     $2,224     $4,772     $1,556     $5,440