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Accumulated Other Comprehensive Income (Schedule Of AOCI) (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | $ (9,233) | $ (53,842)
Other comprehensive income (loss) before reclassifications | 2,022 | (7,653)
Gains reclassified from accumulated other comprehensive income | (5,796) | 1,936
Balance end of period | 202,722 | (1,365)
Total |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | (41,791) | (36,470)
Balance end of period | (45,565) | (42,187)
Unrealized (Loss) Gain on Investments, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | (157) | (22)
Other comprehensive income (loss) before reclassifications | 295 | 187
Gains reclassified from accumulated other comprehensive income | 0 | 0
Balance end of period | 138 | 165
Unrealized Gain (Loss) on Derivative Instruments, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | 7,589 | (5,219)
Other comprehensive income (loss) before reclassifications | 10,451 | 7,514
Gains reclassified from accumulated other comprehensive income | (5,796) | 1,936
Balance end of period | 12,244 | 4,231
Unrealized (Loss) Gain on Net Investment Hedge, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | (394) | (4,311)
Other comprehensive income (loss) before reclassifications | 3,507 | 2,818
Gains reclassified from accumulated other comprehensive income | 0 | 0
Balance end of period | 3,113 | (1,493)
Cumulative Translation Adjustment |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Balance beginning of period | (48,829) | (26,918)
Other comprehensive income (loss) before reclassifications | (12,231) | (18,172)
Gains reclassified from accumulated other comprehensive income | 0 | 0
Balance end of period | $ (61,060) | $ (45,090)

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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