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Contingent Liabilities And Commitments (Tables)
 6 Months Ended
Jan. 31, 2012
Contingent Liabilities And Commitments [Abstract]  
Principal Commercial Commitments Under Repurchase Agreements And Guarantees

Commitment

            Total Amount        
Committed		     

    Terms of Commitments    

Guarantee on dealer inventory financing

       $ 938         Various

Standby repurchase obligations on dealer inventory financing

       $ 887,039         Up to eighteen months
Losses Due To Repurchases Under Repurchase Agreements
       Three Months Ended  
January 31,		        Six Months Ended  
January 31,		  
     2012      2011      2012      2011  

Cost of units repurchased

          $            108              $            2,848              $            1,808              $            5,068    

Realization of units resold

      55          2,400          1,582          4,327    
  

 

 

     

 

 

     

 

 

     

 

 

  

Losses due to repurchase

          $              53              $               448              $               226              $                741