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Interim Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands | Total | Subscribed capital | Treasury shares | Capital reserves | Translation reserve | Cash flow hedge reserve | Reserve for hedges of a net investment in foreign operation | Reserve for actuarial gains (losses) on defined benefit plans | Retained Earnings
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Number of common shares, Beginning of Period (in shares) at Dec. 31, 2016 |  | 59,320,214 |  |  |  |  |  |  |
Equity, Beginning of Period at Dec. 31, 2016 | $ 55,743 | $ 83,770 | $ (3,773) | $ 139,399 | $ 4,237 | $ 793 | $ (16,055) | $ (21,006) | $ (131,622)
Entity Information [Line Items] |  |  |  |  |  |  |  |  |
Profit for the period | 35,243 |  |  |  |  |  |  |  | 35,243
Other comprehensive income, net of tax | 60 |  |  |  | (7,338) | (792) | 8,740 | (550) |
Total comprehensive income, net of tax all attributable to equity holders of the parent | 35,303 |  |  |  | (7,338) | (792) | 8,740 | (550) | 35,243
Dividends paid | (21,955) |  |  | (21,955) |  |  |  |  |
Share based payments | 3,209 |  |  | 3,209 |  |  |  |  |
Number of common shares, End of Period (in shares) at Jun. 30, 2017 |  | 59,320,214 |  |  |  |  |  |  |
Equity, End of Period at Jun. 30, 2017 | 72,300 | $ 83,770 | (3,773) | 120,653 | (3,101) | 1 | (7,315) | (21,556) | (96,379)
Entity Information [Line Items] |  |  |  |  |  |  |  |  |
Beginning of period, as adjusted | 91,314 | $ 83,770 | (3,773) | 102,529 | (1,312) | (314) | (1,486) | (23,198) | (64,902)
Number of common shares, Beginning of Period (in shares) at Dec. 31, 2017 |  | 59,320,214 |  |  |  |  |  |  |
Equity, Beginning of Period at Dec. 31, 2017 | 99,856 |  |  |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |  |  |  |
Profit for the period | 76,919 |  |  |  |  |  |  |  | 76,919
Other comprehensive income, net of tax | (14,833) |  |  |  | (13,421) | (1,557) | (8) | 153 |
Total comprehensive income, net of tax all attributable to equity holders of the parent | 62,086 |  |  |  | (13,421) | (1,557) | (8) | 153 | 76,919
Dividends paid | (23,808) |  |  | (23,808) |  |  |  |  |
Share-based payments (in shares) |  | 401,737 |  |  |  |  |  |  |
Share based payments | 1,214 | $ 484 | 16 | 714 |  |  |  |  |
Number of common shares, End of Period (in shares) at Jun. 30, 2018 |  | 59,721,951 |  |  |  |  |  |  |
Equity, End of Period at Jun. 30, 2018 | $ 130,806 | $ 84,254 | $ (3,757) | $ 79,435 | $ (14,733) | $ (1,871) | $ (1,494) | $ (23,045) | $ 12,017

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