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Noncontrolling and Redeemable Noncontrolling Interests - Changes in Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Noncontrolling Interest [Abstract]
Beginning Balance	$ 36,973	$ 51,546
Redemptions	(12,289)	(14,530)
Granted	0	0
Changes in redemption value	2,800	(3,163)
Currency translation adjustments	(347)	3
Other	0	3,117
Ending Balance	$ 27,137	$ 36,973

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Adjustments to redeemable noncontrolling interest resulting from foreign currency translation adjustments.

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Amount of increase in noncontrolling interest from a business combination.

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