Income Taxes (Income From Continuing Operations Before Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S.									$ (85,258)	$ (243,760)	$ 500
International									77,843	60,391	26,232
(Loss) income from continuing operations before income taxes	$ 1,471	$ 6,970	$ 25,791	$ (41,647)	$ 17,449	$ 11,276	$ 16,483	$ (228,577)	$ (7,415)	$ (183,369)	$ 26,732