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Intangible Assets (Future Amortization Expense) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
[2]
Future Amortization Expense [Line Items]    
2023 $ 8,179  
2024 8,179  
2025 8,179  
2026 8,179  
2027 8,179  
Indefinite-life intangible assets, net carrying value 321,475 [1] $ 321,475
Trade Names    
Future Amortization Expense [Line Items]    
Indefinite-life intangible assets, net carrying value $ 318,700  
[1] Primarily relates to the Silversea Cruises trade name representing approximately $318.7 million.
[2] Primarily relates to the Silversea Cruises trade name representing approximately $318.7 million.