Income Taxes (Details 4) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year			$ 20,753	$ 33,205	$ 77,275
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 24,400		24,400
Increases related to current year tax positions			14,874	2,602	0
Increase related to prior year tax positions			2,485	2,719	2,229
Lapse of statute of limitations			(10,616)	(13,371)	(1,558)
Settlements			(1,764)	(4,402)	(40,514)
Change due to Currency Translation			0	0	(4,227)
Balance, end of year	25,732	$ 20,753	25,732	$ 20,753	$ 33,205
Discrete tax expense	18,300	$ 24,400
Accrued interest and penalties	2,700		2,700
Other Current Assets
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, end of year	$ 3,200		3,200
Foreign
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Income Tax Examination, Estimate of Possible Loss			$ 365,700