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Note 14 - Inventories (Tables) | 12 Months Ended
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Dec. 31, 2017
Statement Line Items [Line Items] |
Disclosure of detailed information about inventories [text block] |
|  | Year ended December 31, |
|  | 2017 |  |  | 2016 |
Finished goods |  |  | 923,316 |  |  |  | 653,482 |
Goods in process |  |  | 619,796 |  |  |  | 375,822 |
Raw materials |  |  | 281,083 |  |  |  | 160,284 |
Supplies |  |  | 486,002 |  |  |  | 451,777 |
Goods in transit |  |  | 274,175 |  |  |  | 162,766 |
|  |  | 2,584,372 |  |  |  | 1,804,131 |
Allowance for obsolescence (see Note 23 (i)) |  |  | (216,068 | ) |  |  | (240,242 | )
|  |  | 2,368,304 |  |  |  | 1,563,889 |

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