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Accumulated Other Comprehensive Loss (Schedule of Amounts Reclassified From AOCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Gain on dissolution | $ (1,027) | $ 1,257 | $ (1,135) | $ 123
Reclassification from AOCI | Accumulated Net Gain (Loss) from Cash Flow Hedges | Currency translation adjustments |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Gain on dissolution | $ 1,401 | $ 0 | $ 1,401 | $ 0

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