Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Minimum Annual Payments for Non-Cancelable Ship Construction Contracts (Details)

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Commitments and Contingencies - Minimum Annual Payments for Non-Cancelable Ship Construction Contracts (Details) - Ship Construction Contracts
$ in Thousands
Dec. 31, 2020
USD ($)
Other Commitments [Line Items]  
2021 $ 463,549
2022 1,118,430
2023 2,168,127
2024 1,092,766
2025 1,758,314
Thereafter 1,870,807
Total minimum annual payments $ 8,471,993