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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Schedule of Reconciliations of Liabilities Measured and Carried at Fair Value on Recurring Basis, with Significant Unobservable Inputs
The reconciliation of contingent consideration liability measured and carried at fair value on a recurring basis with the use of significant unobservable inputs (Level 3) are as follows (in thousands):
 
 
Year Ended December 31,
 
 
2015
 
2014
Balance at beginning of year
 
$
(3,000
)
 
$
(3,667
)
Additions for acquisitions
 
(13,814
)
 
—

Payments on contingent consideration
 
—

 
691

Fair value adjustments
 
(4,167
)
 
—

Foreign currency translation adjustment
 
—

 
(24
)
Balance at end of year
 
$
(20,981
)
 
$
(3,000
)