Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurement of Financial Assets and Liabilities on Recurring Basis

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Summary of Changes in the Fair Value of the Contingent Consideration Liability

The following table summarizes the changes in the fair value of the contingent consideration liability during 2017 and 2018 (in thousands):

Balance at December 31, 2016	$	2,733
Payment of contingent consideration		(897	)
Fair value adjustment of contingent consideration		938
Balance at December 31, 2017		2,774
Payment of contingent consideration		(2,617	)
Fair value adjustment of contingent consideration		(157	)
Balance at December 31, 2018	$	-