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Restructuring (Tables)
3 Months Ended
Oct. 31, 2013
Restructuring and Related Activities [Abstract]  
Schedule of restructuring-related costs
 
  
Three Months Ended
October 31,
 
  
2013
  
2012
 
General and Administrative
      
Severance
 $1,569  $286 
Relocation
  58   - 
       Total general and administrative
 $1,627  $286 
Yard Operations
        
Severance
 $-  $- 
Relocation
  18   39 
       Total yard operations
 $18  $39 
 
Schedule of movements in severance accrual
 
  
Balance at
July 31, 2013
  
Expense
  
Payments
  
Balance at
October 31, 2013
 
Severance
 $2,224  $1,569  $150  $3,643