Income Taxes (Schedule of Income/(Loss) From Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income/(loss) before income taxes, U.S.		$ 63,375	$ 76,024	$ 41,875
Income/(loss) before income taxes, Non-U.S.		75,699	102,188	73,372
Income/(loss) before income taxes		139,074	178,212	115,247
Current:
Federal		1,415	780	304
State		2,028	6,357	4,996
Non-U.S.		26,916	25,255	21,557
Current income tax provision		30,359	32,392	26,857
Deferred:
Federal		11,211	10,583	10,700
State	$ 1,800	192	253	(338)
Non-U.S.		69	1,601	(4,991)
Deferred income tax provision		11,472	12,437	5,371
Total income tax expense		$ 41,831	$ 44,829	$ 32,228