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Significant accounting principles - Condensed consolidated statement of cash flow (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities |  |  |
Profit/(loss) for the year | $ (46,927) | $ 6,602 | $ 9,260
Accounts receivable and accrued revenues | (25,421) | (9,869) | 7,751
Capitalized voyage expenses | 255 | 0 | 0
Accounts payable and accrued expenses | 8,234 | 5,407 | (1,557)
Net cash provided by/(used in) operating activities | 53,985 | $ 101,817 | $ 194,008
Adjustment, IFRS 15 [Member] |  |  |
Cash flows from operating activities |  |  |
Profit/(loss) for the year | 1,302 |  |
Accounts receivable and accrued revenues | (834) |  |
Capitalized voyage expenses | (255) |  |
Accounts payable and accrued expenses | (213) |  |
Net cash provided by/(used in) operating activities | 0 |  |
Balance without adoption of IFRS 15 [Member] |  |  |
Cash flows from operating activities |  |  |
Profit/(loss) for the year | (45,625) |  |
Accounts receivable and accrued revenues | (26,255) |  |
Capitalized voyage expenses | 0 |  |
Accounts payable and accrued expenses | 8,021 |  |
Net cash provided by/(used in) operating activities | $ 53,985 |  |

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