Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents the Company’s hierarchy for its assets and liabilities measured at fair value on a recurring basis as of the following periods (in thousands):

	December 31, 2018								December 31, 2017
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Contingent consideration	$	—	$	—	$	19,112	$	19,112	$	—	$	—	$	24,301	$	24,301
Deferred consideration	—		187,158		—		187,158		—		223,158		—		223,158
Total liabilities measured at fair value	$	—	$	187,158	$	19,112	$	206,270	$	—	$	223,158	$	24,301	$	247,459

Changes in Estimated Fair Value of Contingent Consideration Liabilities

Changes in estimated fair value of contingent consideration liabilities from December 31, 2017 through December 31, 2018 are as follows (in thousands):

	Contingent consideration liability (Level 3 measurement)
Balance at December 31, 2017	$	24,301
Cash payments	(6,303		)
Net loss recorded for fair value adjustments	1,114
Balance at December 31, 2018	$	19,112