Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details)

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Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Line Items]    
Balance $ 1,388,931  
Impairment loss (1,290,797)  
Balance 98,134  
Impairment of trade names 317,000  
Trade names 500,525 $ 817,525
Norwegian Cruise Line    
Goodwill [Line Items]    
Balance 403,805  
Impairment loss (403,805)  
Oceania Cruises    
Goodwill [Line Items]    
Balance 523,026  
Impairment loss (523,026)  
Regent Seven Seas Cruises    
Goodwill [Line Items]    
Balance 462,100  
Impairment loss (363,966)  
Balance 98,134  
Trade names    
Goodwill [Line Items]    
Impairment of trade names 0  
Trade names 500,500  
Trade names | Norwegian Cruise Line    
Goodwill [Line Items]    
Trade names 207,500  
Trade names | Oceania Cruises    
Goodwill [Line Items]    
Impairment of trade names 170,000  
Trade names 140,000  
Trade names | Regent Seven Seas Cruises    
Goodwill [Line Items]    
Impairment of trade names 147,000  
Trade names $ 153,000