Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jul. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 139,149		$ 95,192
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Business Acquisition [Line Items]
Cash		$ 1,325
Other current assets		706
Intangible assets		7,714
Goodwill		45,145
Other assets		221
Assets acquired		55,111
Current liabilities assumed		1,055
Long-term liabilities assumed		3,063
Deferred tax liabilities, non-current		315
Net assets acquired		$ 50,678