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Consolidated statements of other comprehensive income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of comprehensive income [Line Items] |  |  |
Net profit (loss) | $ (11,654) | $ 64,435 | $ (327,814)
Other comprehensive income (loss) to be reclassified to profit or loss in subsequent periods |  |  |
Net change in unrealized gain (loss) on cash flow hedges | 31,464 | (26,822) | (4,368)
Income tax effect | (9,916) | 7,963 | (1,301)
Unrealized gain on investments | 1,053 | (427) | 279
Other comprehensive profit (loss) | 22,601 | (19,286) | (5,390)
Total other comprehensive profit (loss), net of income tax | 10,947 | 45,149 | (333,204)
Attributable to: |  |  |
Equity holders of the parent | (260) | 48,718 | (327,515)
Non-controlling interests | 11,207 | (3,569) | (5,689)
Total other comprehensive loss | $ 10,947 | $ 45,149 | $ (333,204)

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