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Fair Value of Financial Instruments (Tables)
9 Months Ended
Jun. 30, 2012
Fair Value of Financial Instruments  
Summarizes liabilities measured at fair value on a recurring basis

   The following table summarizes liabilities measured at fair value on a recurring basis at June 30, 2012:

 
  Level 1   Level 2   Level 3  

Liabilities:

                   

Current:

                   

Interest rate swaps (included in other current liabilities)

  $   $ (8,182 ) $  

Cross currency swaps (included in other current liabilities)

  $   $   $ (3,300 )

Non-current:

                   

Interest rate swaps (included in other liabilities)

  $   $ (6,804 ) $  

Cross currency swaps (included in other liabilities)

  $   $   $ (10,550 )

        The following table summarizes liabilities measured at fair value on a recurring basis at September 30, 2011:

 
  Level 1   Level 2   Level 3  

Liabilities:

                   

Current:

                   

Interest rate swaps (included in other current liabilities)

  $   $ (9,102 ) $  

Cross currency swaps (included in other current liabilities)

  $   $   $ (2,160 )

Non-current:

                   

Interest rate swaps (included in other liabilities)

  $   $ (8,386 ) $  

Cross currency swaps (included in other liabilities)

  $   $   $ (8,966 )
Schedule of level 3 activity related to cross currency swaps

 

 
  Three months
ended
June 30,
2012
  Three months
ended
June 30,
2011
  Nine months
ended
June 30,
2012
  Nine months
ended
June 30,
2011
 

Beginning balance:

  $ (18,859 ) $ (16,337 ) $ (11,126 ) $  

Realized / unrealized gain (loss) on cross currency swaps

    5,009     1,948     (2,724 )   (14,389 )
                   

Ending balance:

  $ (13,850 ) $ (14,389 ) $ (13,850 ) $ (14,389 )
                   
Schedule of effect of derivative instruments designated as cash flow and net investment hedging instruments

 

 
  Amount of Gain or
(Loss) Recognized in
OCI on Derivative
(Effective Portion)
  Amount of Gain or
(Loss) Reclassified
from Accumulated
OCI into Income
  Amount of Gain or
(Loss) Recognized in
OCI on Derivative
(Effective Portion)
  Amount of Gain or
(Loss) Reclassified
from Accumulated
OCI into Income
 
 
  Three months ended
June 30, 2012
  Three months ended
June 30, 2012
  Nine months ended
June 30, 2012
  Nine months ended
June 30, 2012
 

Cash Flow Hedges:

                         

Interest rate swaps

  $ (1,814 ) $ (2,319 ) $ (5,445 ) $ (6,982 )

Net Investment Hedges:

                         

Cross currency swaps

  $ 3,845   $   $ (128 ) $  
                   

Total

  $ 2,031   $ (2,319 ) $ (5,573 ) $ (6,982 )