Other Income and Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Abstract]
Interest income	$ (5,449)	$ (6,655)	$ (4,133)
Foreign currency (gain) loss, net	9,608	1,944	1,451
Loss on debt retirement	3,042	8,536	1,512
Other	(806)	(2,052)	(5,447)
Total other (income) expense, net	$ 6,395	$ 1,773	$ (6,617)