Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income from continuing operations before income taxes
Domestic	$ 98,111	$ 145,570	$ 125,056
Foreign	45,588	79,041	80,253
Income before income taxes	143,699	224,611	205,309
Current income taxes:
Federal	14,951	26,624	18,751
Foreign	9,909	21,904	23,231
U.S. state and local	2,158	2,553	2,506
Current provision for income taxes	27,018	51,081	44,488
Deferred provision (benefit) for income taxes:
Federal	4,485	7,498	7,621
Foreign	5,287	863	(566)
U.S. state and local	330	551	560
Total deferred provision for income taxes	10,102	8,912	7,615
Provision for income taxes	37,120	59,993	52,103
Other Tax Expense (Benefit)	$ (1,863)	$ 1,100	$ 763

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