Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Business Combination, Contingent Consideration, Reconciliation of Change in Liability [Roll Forward]
Balance at beginning of period	$ 7,302
Payments	(4)
Accretion	564
Fair value adjustments	(214)
Net foreign currency translation adjustment	(148)
Balance at end of the period	7,500
Less current portion in accrued expenses and other current liabilities	(5,686)
Total long-term portion in other long-term liabilities	1,814
Contingent consideration, total remaining estimated payments	$ 9,100