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Voyage and Vessel operating expenses (Tables) | 12 Months Ended
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Dec. 31, 2015
Voyage and Vessel Operating Expenses [Abstract] |
Voyage expenses |
|  |  | 2013 |  |  | 2014 |  |  | 2015
Voyage expenses |  |  |  |  |  |  |  |  |
Port charges |  | $ | 1,455 |  | $ | 5,132 |  | $ | 17,619
Bunkers |  |  | 4,338 |  |  | 33,146 |  |  | 48,535
Commissions - third parties |  |  | 867 |  |  | 1,902 |  |  | 2,915
Commissions - related parties (Note 3) |  |  | 773 |  |  | 1,997 |  |  | 3,350
Miscellaneous |  |  | 116 |  |  | 164 |  |  | 458
Total voyage expenses |  | $ | 7,549 |  | $ | 42,341 |  | $ | 72,877
Vessel operating expenses |
Vessel operating expenses |  |  |  |  |  |  |  |  |
Crew wages and related costs |  | $ | 14,355 |  | $ | 29,449 |  | $ | 65,402
Insurances |  |  | 2,968 |  |  | 4,561 |  |  | 8,026
Maintenance, repairs, spares and stores |  |  | 5,772 |  |  | 9,415 |  |  | 18,577
Lubricants |  |  | 2,339 |  |  | 3,901 |  |  | 8,187
Tonnage taxes |  |  | 797 |  |  | 1,360 |  |  | 3,717
Upgrading expenses |  |  | 205 |  |  | 3,167 |  |  | 6,205
Miscellaneous |  |  | 651 |  |  | 1,243 |  |  | 2,682
Total vessel operating expenses |  | $ | 27,087 |  | $ | 53,096 |  | $ | 112,796

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