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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2016
Fair Value Disclosures [Abstract]  
Schedule of Reconciliations of Liabilities Measured and Carried at Fair Value on Recurring Basis, with Significant Unobservable Inputs
The following table summarizes the changes in the balance of contingent consideration for 2016 (in thousands):
 
 
Three Months Ended
 
Nine Months Ended
 
September 30, 2016
 
September 30, 2016
Balance at beginning of period
$
(5,843
)
 
$
(20,981
)
Payments on contingent consideration
5,843

 
21,594

Fair value adjustment

 
(613
)
Balance at end of period
$

 
$