Leases - Future Minimum Commitments for Chartered-In Contracts (Table) (Details)
$ in Thousands
Jun. 30, 2020
USD ($)
Charter-in contracts  
Property Subject To Or Available For Operating Lease [Line Items]  
June 30, 2021 $ 101,484
June 30, 2022 79,864
June 30, 2023 58,885
June 30, 2024 46,898
June 30, 2025 28,566
June 30, 2026 and thereafter 55,528
Total 371,225
Operating lease liabilities, including current portion 301,610
Discount based on incremental borrowing rate 69,615
Land Leases  
Property Subject To Or Available For Operating Lease [Line Items]  
June 30, 2021 556
June 30, 2022 556
June 30, 2023 556
June 30, 2024 556
June 30, 2025 556
June 30, 2026 and thereafter 22,724
Total 25,504
Operating lease liabilities, including current portion 7,769
Discount based on incremental borrowing rate 17,735
Office space  
Property Subject To Or Available For Operating Lease [Line Items]  
June 30, 2021 671
June 30, 2022 107
June 30, 2023 97
June 30, 2024 32
June 30, 2025 0
June 30, 2026 and thereafter 0
Total 907
Operating lease liabilities, including current portion 861
Discount based on incremental borrowing rate $ 46