Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Income (Loss) (Details)

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period $ 26,966 $ (314,473) $ (412,650)
Current period other comprehensive income (loss) before reclassifications (158,943) 304,226 1,776
Amounts reclassified into earnings (29,670) 37,213 96,401
Accumulated other comprehensive income (loss) at end of period (161,647) 26,966 (314,473)
Change Related to Cash Flow Hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period 33,861 (307,618) (405,298)
Current period other comprehensive income (loss) before reclassifications (161,214) 304,684 1,711
Amounts reclassified into earnings [1] (30,096) 36,795 95,969
Accumulated other comprehensive income (loss) at end of period (157,449) [2] 33,861 (307,618)
Change Related to Shipboard Retirement Plan      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period (6,895) (6,855) (7,352)
Current period other comprehensive income (loss) before reclassifications 2,271 (458) 65
Amounts reclassified into earnings 426 [3] 418 [4] 432 [4]
Accumulated other comprehensive income (loss) at end of period $ (4,198) $ (6,895) $ (6,855)
[1] We refer you to Note 9 "Fair Value Measurements and Derivatives" in these notes to consolidated financial statements for the affected line items in the consolidated statements of operations.
[2] Amount relates to (i) utilization of deferred tax assets, (ii) revaluation of deferred tax assets from their functional currency to U.S. dollars and (iii) reversal of valuation allowances.
[3] Amortization of prior-service cost and actuarial loss reclassified to other income (expense), net.
[4] Amortization of prior-service cost and actuarial loss reclassified to payroll and related expense.