Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Effective tax rate	5.70%	0.20%	25.90%
Undistributed earnings of foreign subsidiaries	$ 767,400
Unrecognized tax benefits	3,000	$ 1,000
Reserve for potential uncertain income tax return positions	8,291	9,199	$ 9,294	$ 9,144
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	$ 46,851	$ 46,851