Sale of Business - Narrative (Details) $ in Thousands		3 Months Ended			9 Months Ended
	Jun. 25, 2020 numberOfSubsidiaries	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses)		$ 0		$ (14)	$ 0	$ 52,074
Disposal Group, Including Discontinued, Interest Received					700
Loss on sale of business		$ 2,171		380	28,274	$ 57,295
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of subsidiaries sold | numberOfSubsidiaries	5
Disposal Group, Including Discontinued Operation, Sales Price				35,000
Disposal Group, Including Discontinued Operation, Working Capital			$ 18,400	21,100
Cash outflow at closing				$ 4,500
Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses)					(24,700)
Payments received from disposal					$ 3,800