Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit as of January 1	$ 22,827	$ 19,657	$ 15,209
Gross increases-acquisitions	26,914	0	0
Gross increases-tax positions in prior period	207	1,229	905
Gross decreases-tax positions in prior period	(1,743)	(376)	(765)
Gross increases-tax positions in current period	3,563	4,014	3,757
Reductions due to a lapse of the applicable statute of limitations	(2,230)	(994)	(847)
Changes due to currency fluctuation	(453)	(703)
Changes due to currency fluctuation			1,414
Settlements	0	0	(16)
Unrecognized tax benefit as of December 31	$ 49,085	$ 22,827	$ 19,657

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of increase in unrecognized tax benefits resulting from acquisitions.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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