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Long-term debt (Tables) | 12 Months Ended
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Dec. 31, 2019
Long-term Debt, by Current and Noncurrent [Abstract] |
Long-term debt, Principal payments |
Twelve month periods ending |  |  | Amount
December 31, 2020 |  | $ | 150,350
December 31, 2021 |  |  | 144,621
December 31, 2022 |  |  | 166,764
December 31, 2023 |  |  | 361,263
December 31, 2024 |  |  | 116,272
December 31, 2025 and thereafter |  |  | 186,767
Total Long term debt |  | $ | 1,126,037
Unamortized debt issuance costs |  |  | (15,098)
Total Long term debt, net |  | $ | 1,110,939
Current portion of long term debt |  |  | 150,350
Long term debt, net |  |  | 960,589
Interest and finance costs |
| Years ended December 31,
| 2017 |  |  | 2018 |  |  | 2019
Interest on financing agreements | $ | 48,814 |  | $ | 69,977 |  | $ | 81,393
Less: Interest capitalized |  | (2,423) |  |  | (1,753) |  |  | (1,018)
Reclassification adjustments of interest rate swap loss/(gain) transferred to Interest and finance costs from Other Comprehensive Income (Note 18) |  | 852 |  |  | (3) |  |  | -
Amortization of debt issuance costs |  | 2,660 |  |  | 3,253 |  |  | 5,590
Other bank and finance charges |  | 555 |  |  | 2,241 |  |  | 1,652
Interest and finance costs | $ | 50,458 |  | $ | 73,715 |  | $ | 87,617

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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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