Fair Value Measurements - Schedule of reconciliation of opening and closing balances for fair value measurements categorized within Level 3 (Details) - Contingent Consideration Liabilities - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 7,689	$ 5,368
Payments	(279)	(280)
Accretion expense	500	903
Valuation gain (loss) for the period	(610)	1,698
Ending balance	$ 7,300	$ 7,689