Other Income (Expense), Net - Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income and Expenses [Abstract]
Interest and investment income	$ 14,991	$ 14,590	$ 8,488
Gain on asset acquisition and sale of business	22,690	0	0
Loss on extinguishment of long-term debt	(5,488)	0	0
Other	(3,131)	(9,171)
Other			252
Other income (expense), net	$ 29,062	$ 5,419	$ 8,740