Intangible Assets and Goodwill (Goodwill Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Balance at the beginning of the period	$ 183,465	$ 207,178
Adjustment to goodwill	(243)
Additions to goodwill		30,322
Divestiture of goodwill		(54,494)
Effect of exchange rates		459
Balance at the end of the period	$ 183,222	$ 183,465