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Operating Segment Data - Narrative (Details) - vessel
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Segment Reporting Information [Line Items]        
Revenues, non-US sources 7.30% 9.00% 8.40% 7.10%
Disposed of by sale | Marine vessel disposition        
Segment Reporting Information [Line Items]        
Disposal, number of units sold 2      
Disposed of by sale | Marine vessel disposition | Other        
Segment Reporting Information [Line Items]        
Disposal, number of units sold 2