Goodwill and Intangible Assets - Schedule of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Intangible assets subject to amortization
Gross carrying amount	$ 246,687	$ 245,176
Accumulated amortization	(152,849)	(140,710)
Foreign currency translation adjustment	(7,635)	(7,781)
Total	86,203	96,685
Intangible assets with indefinite lives
Gross carrying amount	13,372	14,883
Foreign currency translation adjustment	(1,005)	(977)
Total	12,367	13,906
Total intangible assets, net	$ 98,570	$ 110,591