Income Taxes, Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current income tax expense [Abstract]
Federal	$ 16,807	$ 9,660	$ 12,994
State	5,128	3,000	2,622
Foreign	22,875	24,418	22,680
Current income tax expense, total	44,810	37,078	38,296
Deferred expense (benefit) [Abstract]
Federal	(4,159)	(6,918)	(17,246)
State	(1,189)	(565)	18
Foreign	(723)	(1,222)	(2,112)
Deferred income tax expense (benefit), total	(6,071)	(8,705)	(19,340)
Income taxes	$ 38,739	$ 28,373	$ 18,956