Fair Value of Financial Assets and Liabilities - Schedule of Reconciliation of Contingent Consideration Obligations Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Beginning balance	$ 273,367	$ 328,933
Fair value adjustments	(17,845)	(55,566)
Ending balance	$ 255,522	$ 273,367

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

No definition available.

Name:	us-gaap_LiabilitiesFairValueAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration