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Derivatives and Hedging Activities (Tables)
9 Months Ended
Apr. 30, 2013
Text Block [Abstract]  
Fair Values of Derivative Instruments in Consolidated Balance Sheets
Fair values of derivative instruments in the condensed consolidated balance sheets were as follows: 
 
Asset Derivatives
 
Liability Derivatives
 
April 30, 2013
 
July 31, 2012
 
April 30, 2013
 
July 31, 2012
  
Balance
Sheet
Location
 
Fair
Value
 
Balance
Sheet
Location
 
Fair
Value
 
Balance
Sheet
Location
 
Fair
Value
 
Balance
Sheet
Location
 
Fair
Value
Derivatives designated as hedging instruments
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash flow hedges
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Foreign exchange contracts
Prepaid expenses and other current assets
 
$
149

 
Prepaid expenses and other current assets
 
$
1,156

 
Other current liabilities
 
$
57

 
Other current liabilities
 
$
210

Net investment hedges
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Foreign exchange contracts
Prepaid expenses and other current assets
 
$

 
Prepaid expenses and other current assets
 
$

 
Other current liabilities
 
$
26

 
Other current liabilities
 
$
71

Foreign currency denominated debt
Prepaid expenses and other current assets
 
$

 
Prepaid expenses and other current assets
 
$

 
Long term obligations, less current maturities
 
$
98,228

 
Long term obligations, less current maturities
 
$
99,081

Total derivatives designated as hedging instruments
 
 
$
149

 
 
 
$
1,156

 
 
 
$
98,311

 
 
 
$
99,362

Derivatives not designated as hedging instruments
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Foreign exchange contracts
Prepaid expenses and other current assets
 
$
1,093

 
Prepaid expenses and other current assets
 
$
78

 
Other current liabilities
 
$
355

 
Other current liabilities
 
$

Total derivatives not designated as hedging instruments
 
 
$
1,093

 
 
 
$
78

 
 
 
$
355

 
 
 
$