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, 2019
USD ($)
Other Commitments [Line Items]  
2020 $ 556,784
2021 279,254
2022 1,595,262
2023 1,439,097
2024 888,790
Thereafter 829,303
Total minimum annual payments $ 5,588,490