Income Taxes - Provision Benefit for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current
U.S.	$ 29,548	$ 49,819	$ 67,793
State and local	4,603	9,074	8,056
Foreign	50,173	41,864	46,862
Total current	84,324	100,757	122,711
Deferred
U.S.	10,066	10,158	(5,471)
State and local	1,522	(115)	(17)
Foreign	(3,350)	(3,418)	1,143
Total deferred	8,238	6,625	(4,345)
Total provision for income taxes	$ 92,562	$ 107,382	$ 118,366