Disposition (Tables)

12 Months Ended

Dec. 31, 2018

Business Combinations [Abstract]

Schedule of reconciliation of accrued balances of the contingent consideration

A reconciliation of accrued balances of the contingent consideration using significant unobservable inputs (Level 3) is as follows:

(in thousands)	Fair Value
Accrued contingent consideration liability as of December 31, 2017	$	33,887
Accretion of interest	742
Disposition	$	(34,629	)
Accrued earnout liability as of December 31, 2018	$	—