Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Business Combination, Contingent Consideration, Reconciliation of Change in Liability [Roll Forward]
Balance at beginning of period	$ 4,609
Payments	(5)
Accretion	56
Net foreign currency translation adjustment	(197)
Balance at end of the period	4,463
Less current portion in accrued expenses and other current liabilities	(2,935)
Total long-term portion in other long-term liabilities	1,528
Contingent consideration, total remaining estimated payments	$ 5,600