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Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Analysis of income and expense [abstract] |  |
Cost of sales | $ 2,570,840 | $ 3,128,237
Selling and distribution | 498,738 | 464,474
Administrative expenses | 74,486 | 60,367
Total expenses by function | 3,144,064 | 3,653,078
Cost of raw materials and purchased methanol | 2,169,027 | 2,742,370
Ocean freight and other logistics | 334,650 | 399,293
Employee expenses, including share-based compensation | 184,171 | 182,519
Other expenses | 112,089 | 83,593
Cost of sales and operating expenses | 2,799,937 | 3,407,775
Depreciation and amortization | 344,127 | 245,303
Total expenses by nature | $ 3,144,064 | $ 3,653,078

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- Definition The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_99&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_103&doctype=Standard -URIDate 2019-03-27 + Details
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