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Leases - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Jan. 31, 2022
extension_option
Dec. 31, 2021
USD ($)
Nov. 30, 2021
Lessee, Lease, Description [Line Items]              
Present value of lease liabilities $ 402,227   $ 402,227     $ 472,275  
Variable lease cost 12,600 $ 0 32,000 $ 0      
Land and Building              
Lessee, Lease, Description [Line Items]              
Number of extension options | extension_option         2    
Additional lease term         5 years    
Present value of lease liabilities 101,600   101,600     127,000  
Ships | Silver Dawn              
Lessee, Lease, Description [Line Items]              
Present value of lease liabilities 269,500   269,500     283,700  
Finance lease term             15 years
Ships | Silver Whisper              
Lessee, Lease, Description [Line Items]              
Present value of lease liabilities $ 8,900   $ 8,900     $ 24,100  
Minimum | Real Estate              
Lessee, Lease, Description [Line Items]              
Renewal term 1 year   1 year        
Minimum | Berthing Agreement              
Lessee, Lease, Description [Line Items]              
Renewal term 1 year   1 year        
Maximum | Real Estate              
Lessee, Lease, Description [Line Items]              
Renewal term 10 years   10 years        
Maximum | Berthing Agreement              
Lessee, Lease, Description [Line Items]              
Renewal term 20 years   20 years