Accumulated Other Comprehensive Income (Schedule Of AOCI) (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	$ 177,825	$ (9,233)
Other comprehensive (loss) income before reclassifications	(8,276)	4,521
Gains (losses) reclassified from accumulated other comprehensive income	(2,574)	(3,313)
Balance end of period	273,400	171,549
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(46,182)	(41,791)
Balance end of period	(57,032)	(40,583)
Unrealized Gain (Loss) on Investments, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	110	(157)
Other comprehensive (loss) income before reclassifications	(574)	362
Gains (losses) reclassified from accumulated other comprehensive income	0	0
Balance end of period	(464)	205
Foreign Currency Exchange Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(736)	6,229
Other comprehensive (loss) income before reclassifications	5,538	1,110
Gains (losses) reclassified from accumulated other comprehensive income	(2,574)	(3,313)
Balance end of period	2,228	4,026
Euro-Denominated Notes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	1,396	(394)
Other comprehensive (loss) income before reclassifications	(642)	500
Gains (losses) reclassified from accumulated other comprehensive income	0	0
Balance end of period	754	106
Cross Currency Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	3,467	1,360
Other comprehensive (loss) income before reclassifications	2,602	868
Gains (losses) reclassified from accumulated other comprehensive income	0	0
Balance end of period	6,069	2,228
Cumulative Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(50,419)	(48,829)
Other comprehensive (loss) income before reclassifications	(15,200)	1,681
Gains (losses) reclassified from accumulated other comprehensive income	0	0
Balance end of period	$ (65,619)	$ (47,148)

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

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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