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Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Statement of Comprehensive Income [Abstract] |  |  |
Net income (loss) | $ 30,052 | $ (81,445) | $ (376,980)
Other comprehensive income (loss), net of tax: |  |  |
Unrealized gain (loss) on hedges arising during the period | 3,323 | 2,366 | (25,259)
Reclassification adjustments for loss on hedges included in net income (loss) | 12,915 | 12,851 | 13,659
Reclassification adjustments for loss from derivative instruments de-designated as cash flow hedges included in net loss | 0 | 0 | 18,014
Income taxes on unrealized (gain) loss on hedges | (5,724) | (5,347) | (2,214)
Unrealized gain on hedges, net of tax | 10,514 | 9,870 | 4,200
Unrealized gain on note receivable arising during the period | 629 | 0 | 0
Income taxes on unrealized gain on note receivable | (220) | 0 | 0
Unrealized gain on note receivable, net of tax | 409 | 0 | 0
Foreign currency translation gain (loss) arising during the period | 16,264 | (33,899) | (12,849)
Reclassification adjustment for net translation gain realized upon liquidation | 0 | (2,044) | 0
Foreign currency translation gain (loss) | 16,264 | (35,943) | (12,849)
Other comprehensive income (loss), net of tax | 27,187 | (26,073) | (8,649)
Comprehensive income (loss) | $ 57,239 | $ (107,518) | $ (385,629)

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