Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Business Combination, Contingent Consideration, Reconciliation of Change in Liability [Roll Forward]
Balance at beginning of period	$ 4,609
Acquisitions	5,000
Payments	(9)
Accretion	113
Fair value adjustments	(23)
Net foreign currency translation adjustment	(141)
Balance at end of the period	9,549
Less current portion in accrued expenses and other current liabilities	(7,986)
Total long-term portion in other long-term liabilities	1,563
Contingent consideration, total remaining estimated payments	$ 10,600