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SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Selling, general and administrative expense [Line Items]      
Services and fees $ 86,990 $ 65,965 $ 69,434
Labor cost 229,529 193,118 214,352
Depreciation of property, plant and equipment 12,345 13,589 13,761
Amortization of intangible assets 78,264 38,427 36,283
Maintenance and expenses 5,038 3,092 4,957
Taxes 98,786 90,166 130,061
Office expenses 35,922 36,223 40,487
Freight and transportation 259,898 234,801 246,762
(Decrease) Increase of allowance for doubtful accounts 685 288 (824)
Others 16,790 12,273 15,019
Selling, general and administrative expenses 824,247 687,942 770,292
PricewaterhouseCoopers      
Selling, general and administrative expense [Line Items]      
Auditor's remuneration 3,501 3,385 3,888
Auditor's remuneration for audit services 2,863 2,869 3,535
Auditor's remuneration for audit-related services 91 99 114
Auditor's remuneration for tax services 229 251 217
Auditor's remuneration for other services $ 318 $ 166 $ 22