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Long-term debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Long-term Debt, by Current and Noncurrent [Abstract] |
Long-term debt, Principal payments |
Twelve month periods ending |  |  | Amount
December 31, 2019 |  | $ | 101,007
December 31, 2020 |  |  | 129,395
December 31, 2021 |  |  | 101,380
December 31, 2022 |  |  | 115,544
December 31, 2023 |  |  | 293,802
December 31, 2024 and thereafter |  |  | 56,695
Total Long term debt |  | $ | 797,823
Unamortized debt issuance costs |  |  | 10,997
Total Long term debt, net |  | $ | 786,826
Current portion of long term debt |  |  | 101,007
Long term debt, net |  |  | 685,819
Interest and finance costs |
|  | 2016 |  |  | 2017 |  |  | 2018
Interest on long term debt and bareboat leases | $ | 40,449 |  | $ | 48,814 |  | $ | 69,977
Less: Interest capitalized |  | (3,940) |  |  | (2,423) |  |  | (1,753)
Reclassification adjustments of interest rate swap loss/(gain) transferred to Interest and finance costs from Other Comprehensive Income (Note 18) |  | 1,252 |  |  | 852 |  |  | (3)
Amortization of debt issuance costs |  | 2,855 |  |  | 2,660 |  |  | 3,253
Other bank and finance charges |  | 601 |  |  | 555 |  |  | 2,241
Interest and finance costs | $ | 41,217 |  | $ | 50,458 |  | $ | 73,715

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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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