Fair Value - Schedule of Reported Fair values of Contingent Consideration (Details) - Fair Value, Recurring - Level 3 - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value Liabilities Measured On Recurring Basis [Line Items]
Total contingent consideration	$ 32,850	$ 29,932
Current Portion of Contingent Consideration
Fair Value Liabilities Measured On Recurring Basis [Line Items]
Total contingent consideration	13,128
Contingent Consideration
Fair Value Liabilities Measured On Recurring Basis [Line Items]
Total contingent consideration	$ 19,722	$ 29,932