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Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2011
Financial Instruments [Abstract]  
Fair value of derivative instruments and the balance sheet lines in which they are recorded
The following table sets forth the fair values of derivative instruments held by the Company as of June 30, 2011 and December 31, 2010 and the balance sheet lines in which they are recorded:
 
   
Fair Value - Asset (Liability)
  
   
June 30, 2011
  
December 31, 2010
 
Balance Sheet Caption
Foreign currency forward / collar contracts
 $215  $503 
Prepaid / Other assets
Net investment hedge - cross currency swap
  (29,895)  (19,774)
Other liabilities

Assets and liabilities measured at fair value on a recurring basis
The following table presents the Company's assets and liabilities measured at fair value on a recurring basis as of June 30, 2011 and December 31, 2010:

   
June 30, 2011
  
December 31, 2010
 
   
Level 1
  
Level 2
  
Level 3
  
Level 1
  
Level 2
  
Level 3
 
Assets:
                  
Short-term investments
 $-  $-  $-  $121,734  $-  $- 
Foreign currency cash flow hedges
  -   215   -   -   503   - 
Liabilities:
                        
Net investment hedge derivative
  -   29,895   -   -   19,774   -