Fair Value Measurements - Schedule of Contingent Consideration Roll Forward (Details) - Contingent Consideration - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of period	$ 66	$ 6,198	$ 10,612
Issuance of contingent consideration	2,848		1,728
Change in fair value of contingent consideration		(2,300)	(5,664)
Payment of contingent consideration	88	3,686	271
Effect of foreign currency translation	(131)	(146)	(207)
Balance at End of period	$ 2,957	$ 66	$ 6,198