Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Combination, Contingent Consideration, Reconciliation of Change in Liability
Balance at beginning of period	$ 4,609	$ 4,396	$ 7,302
Acquisitions	5,000	2,796	0
Payments	(3,194)	(1,633)	(10)
Accretion	228	601	792
Fair value adjustments	409	(1,947)	(3,691)
Net foreign currency translation adjustment	(141)	396	3
Balance at end of the period	6,911	4,609	4,396
Less current portion in accrued expenses and other current liabilities	(5,036)	(2,683)	(2,351)
Total long-term portion in other long-term liabilities	1,875	$ 1,926	$ 2,045
Contingent consideration, total remaining estimated payments	$ 8,400