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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2012
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, 2012 and 2011:

 
 
Fair Value Measurements
Using Significant
 
 
 
Unobservable Inputs(Level 3)
 
 
 
Acquisition-related
Contingent Consideration
 
 
 
 
 
 
 
 
 
 
2012
 
 
2011
 
 
 
 
 
 
 
 
Balance at January 1
 
E
5,753
 
 
E
3,212
 
Change in fair value recorded in earnings
 
 
780
 
 
 
2,541
 
Balance at December 31
 
E
 6,533
 
 
E
5,753