Business Acquisition (Summary of Operational Results) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Operating income/(loss)		$ 166,080	$ 193,576	$ 137,408
Income before income taxes		139,074	178,212	115,247
Net loss attributable to the Company		$ 98,589	$ 132,398	$ 82,891
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Basic (in dollars per share)		$ 3.05	$ 4.10	$ 2.57
Diluted (in dollars per share)		$ 3.05	$ 4.10	$ 2.57
CirComp GmbH
Business Acquisition [Line Items]
Net sales	$ 485
Operating income/(loss)	(162)
Income before income taxes	(199)
Net loss attributable to the Company	$ (324)
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Basic (in dollars per share)	$ (0.01)
Diluted (in dollars per share)	$ (0.01)