Income Taxes (Schedule of Valuation Allowance For Deferred Tax Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Balance at beginning of year	$ 9,454	$ 6,212	$ 6,211
Charges to costs and expense	31,076	3,489	402
Write-off/cash payments	(34)	(226)	0
Foreign currency translation	(234)	(21)	(401)
Balance at the end of the year	$ 40,262	$ 9,454	$ 6,212