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Equity-accounted investees (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Equity-accounted investees [Line Items] |  |  |
Current assets | $ 2,466,261 | $ 2,331,911 |
Non-current Assets | 1,829,975 | 1,886,069 |
Current liabilities | 748,045 | 580,349 |
Non-current liabilities | 1,300,723 | 1,330,359 |
Revenue | 2,157,323 | 1,939,322 | $ 1,728,332
Gain (loss) from continuing operations | 428,417 | 281,924 | 224,520
Other comprehensive income | (4,948) | 548 | (6,847)
Comprehensive income | 423,469 | 282,472 | 217,673
Associates [member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 181,405 | 152,760 | 187,034
Non-current Assets | 29,910 | 23,938 | 24,135
Current liabilities | 59,507 | 57,044 | 100,838
Non-current liabilities | 13,766 | 3,643 | 1,205
Revenue | 194,902 | 207,279 | 219,426
Gain (loss) from continuing operations | 27,397 | 20,433 | 21,686
Other comprehensive income | 52 | 1,167 | 1,410
Comprehensive income | 27,449 | 21,600 | 23,096
Abu Dhabi Fertilizer Industries WWL [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 44,801 | 37,801 | 33,770
Non-current Assets | 2,032 | 2,104 | 2,529
Current liabilities | 3,764 | 3,843 | 4,499
Non-current liabilities | 0 | 0 | 0
Revenue | 35,131 | 41,442 | 46,609
Gain (loss) from continuing operations | 4,008 | 4,005 | 3,932
Other comprehensive income | 0 | 0 | 1,230
Comprehensive income | 4,008 | 4,005 | 5,162
Doktor Tarsa Tarim Sanayi AS [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 81,057 | 68,449 | 103,099
Non-current Assets | 10,731 | 5,984 | 7,555
Current liabilities | 36,960 | 39,729 | 80,588
Non-current liabilities | 11,251 | 1,281 | 0
Revenue | 75,269 | 83,905 | 64,374
Gain (loss) from continuing operations | 12,854 | 8,052 | 5,009
Other comprehensive income | 0 | 1,180 | 0
Comprehensive income | 12,854 | 9,232 | 5,009
Ajay North America [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 19,426 | 18,844 | 18,651
Non-current Assets | 12,498 | 11,633 | 10,619
Current liabilities | 2,470 | 3,015 | 2,917
Non-current liabilities | 0 | 0 | 0
Revenue | 36,185 | 35,715 | 43,453
Gain (loss) from continuing operations | 7,505 | 5,702 | 7,347
Other comprehensive income | 0 | 0 | 0
Comprehensive income | 7,505 | 5,702 | 7,347
Ajay Europe SARL [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 23,555 | 20,675 | 18,979
Non-current Assets | 1,266 | 1,361 | 1,661
Current liabilities | 8,534 | 7,290 | 6,239
Non-current liabilities | 0 | 0 | 0
Revenue | 32,310 | 33,319 | 40,484
Gain (loss) from continuing operations | 2,098 | 2,265 | 3,464
Other comprehensive income | 52 | (13) | (42)
Comprehensive income | 2,150 | 2,252 | 3,422
Charlee SQM Thailand Co. Ltd. [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 8,585 | 6,264 | 7,418
Non-current Assets | 712 | 591 | 566
Current liabilities | 3,292 | 2,448 | 4,687
Non-current liabilities | 255 | 0 | 0
Revenue | 13,618 | 12,065 | 12,524
Gain (loss) from continuing operations | 981 | 609 | 304
Other comprehensive income | 0 | 0 | 222
Comprehensive income | 981 | 609 | 526
SQM Eastmed Turkey [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets | 3,981 | 727 | 976
Non-current Assets | 2,671 | 2,265 | 380
Current liabilities | 4,487 | 719 | 27
Non-current liabilities | 2,260 | 2,362 | 1,189
Revenue | 2,389 | 833 | 0
Gain (loss) from continuing operations | (49) | (200) | (8)
Other comprehensive income | 0 | 0 | 0
Comprehensive income | $ (49) | $ (200) | (8)
Sales de Magnesio Ltda. [Member] |  |  |
Equity-accounted investees [Line Items] |  |  |
Current assets |  |  | 4,141
Non-current Assets |  |  | 825
Current liabilities |  |  | 1,881
Non-current liabilities |  |  | 16
Revenue |  |  | 11,982
Gain (loss) from continuing operations |  |  | 1,638
Other comprehensive income |  |  | 0
Comprehensive income |  |  | $ 1,638

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