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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2013
Fair Value Measurements [Abstract]  
Acquisition-related Contingent Consideration
The following table presents changes to the Company’s acquisition-related contingent consideration for the years ended December 31, 2013 and 2012:

 
Fair Value Measurements Using Significant
 
Unobservable Inputs(Level 3)
 
Acquisition-related Contingent Consideration
 
 
2013
2012
 
Balance at January 1
 
E
6,533
  
E
5,753
 
Change in fair value
  
(6,297
)
  
780
 
Balance at December 31
 
E
236
  
E
6,533