| Company’s lease expense |
| | Drybulk Vessel Operations Three Month Period Ended June 30, 2020 | | | Logistics Business Three Month Period Ended June 30, 2020 | | | Total | | Lease expense for charter-in contracts | | $ | 24,155 | | | $ | 1,170 | | | $ | 25,325 | | Lease expense for land lease agreements | | | — | | | | 143 | | | | 143 | | Lease expense for office lease agreements | | | — | | | | 144 | | | | 144 | | Total | | $ | 24,155 | | | $ | 1,457 | | | $ | 25,612 | |
| | Drybulk Vessel Operations Three Month Period Ended June 30, 2019 | | | Logistics Business Three Month Period Ended June 30, 2019 | | | Total | | Lease expense for charter-in contracts | | $ | 29,182 | | | $ | — | | | $ | 29,182 | | Lease expense for land lease agreements | | | — | | | | 135 | | | | 135 | | Lease expense for office lease agreements | | | 660 | | | | 166 | | | | 826 | | Total | | $ | 29,842 | | | $ | 301 | | | $ | 30,143 | |
| | Drybulk Vessel Operations Six Month Period Ended June 30, 2020 | | | Logistics Business Six Month Period Ended June 30, 2020 | | | Total | | Lease expense for charter-in contracts | | $ | 49,771 | | | $ | 2,988 | | | $ | 52,759 | | Lease expense for land lease agreements | | | — | | | | 282 | | | | 282 | | Lease expense for office lease agreements | | | — | | | | 303 | | | | 303 | | Total | | $ | 49,771 | | | $ | 3,573 | | | $ | 53,344 | |
| | Drybulk Vessel Operations Six Month Period Ended June 30, 2019 | | | Logistics Business Six Month Period Ended June 30, 2019 | | | Total | | Lease expense for charter-in contracts | | $ | 60,398 | | | $ | — | | | $ | 60,398 | | Lease expense for land lease agreements | | | — | | | | 271 | | | | 271 | | Lease expense for office lease agreements | | | 1,464 | | | | 340 | | | | 1,804 | | Total | | $ | 61,862 | | | $ | 611 | | | $ | 62,473 | |
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| Total amount of lease payments on an undiscounted basis |
| | Charter-in vessels in operation | | | | Land leases | | Office space | | June 30, 2021 | | $ | 101,484 | | | $ | 556 | | $ | 671 | | June 30, 2022 | | | 79,864 | | | | 556 | | | 107 | | June 30, 2023 | | | 58,885 | | | | 556 | | | 97 | | June 30, 2024 | | | 46,898 | | | | 556 | | | 32 | | June 30, 2025 | | | 28,566 | | | | 556 | | | — | | June 30, 2026 and thereafter | | | 55,528 | | | | 22,724 | | | — | | Total | | $ | 371,225 | | | $ | 25,504 | | $ | 907 | | Operating lease liabilities, including current portion | | $ | 301,610 | | | $ | 7,769 | | $ | 861 | | Discount based on incremental borrowing rate | | $ | 69,615 | | | $ | 17,735 | | $ | 46 | |
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