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, 2019
Dec. 31, 2018
Dec. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period $ (161,647) $ 26,966 $ (314,473)
Current period other comprehensive income (loss) before reclassifications (125,323) (158,943) 304,226
Amounts reclassified into earnings (8,520) (29,670) 37,213
Accumulated other comprehensive income (loss) at end of period (295,490) (161,647) 26,966
Amount of loss expected to be reclassified into earnings 16,500    
Change Related to Cash Flow Hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period (157,449)    
Current period other comprehensive income (loss) before reclassifications (123,015)    
Amounts reclassified into earnings (8,898)    
Accumulated other comprehensive income (loss) at end of period (289,362) (157,449)  
Change Related to Cash Flow Hedge      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period (157,449) 33,861 (307,618)
Current period other comprehensive income (loss) before reclassifications   (161,214) 304,684
Amounts reclassified into earnings   (30,096) 36,795
Accumulated other comprehensive income (loss) at end of period   (157,449) 33,861
Change Related to Shipboard Retirement Plan      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Accumulated other comprehensive income (loss) at beginning of period (4,198) (6,895) (6,855)
Current period other comprehensive income (loss) before reclassifications (2,308) 2,271 (458)
Amounts reclassified into earnings 378 426 418
Accumulated other comprehensive income (loss) at end of period $ (6,128) $ (4,198) $ (6,895)