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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value, Inputs, Level 1 [Member]
 
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following tables present certain information for our financial liabilities that is disclosed at fair value on a recurring basis at March 31, 2013 and 2012: 

    Level 1     Level 1  
    March 31, 2013     December 31, 2012  
    Carrying
Amount
    Fair Value     Carrying
Amount
    Fair Value  
Liabilities:                                
  6.75% Notes due 2020   $ 550,000     $ 555,500     $     $  
11% Notes due 2016   $     $     $ 429,193     $ 467,500  
Fair Value, Inputs, Level 3 [Member]
 
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following table presents changes in Deferred Acquisition Consideration.

 

    Fair Value
Measurements Using
Significant
Unobservable Inputs
(Level 3)
 
    March 31,     December 31,  
    2013     2012  
Beginning Balance of contingent payments   $ 194,795     $ 129,759  
Payments     (592 )     (55,071 )
Grants           63,972  
Redemption value adjustments     3,049       55,737  
Transfers from fixed payments           159  
Foreign translation adjustment     (270 )     239  
Ending Balance of contingent payments   $ 196,982     $ 194,795