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Company Operations - Summary (Details) | 12 Months Ended
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Dec. 31, 2018 item shares
Company Operations |
Number of common shares issued for each American Depository Receipts | shares | 2
BRAZIL |
Company Operations |
Number of industrial units | 7
Bahia |
Company Operations |
Number of industrial units | 1
Maranho |
Company Operations |
Number of industrial units | 1
Cear |
Company Operations |
Number of industrial units | 1
Par |
Company Operations |
Number of industrial units | 1
So Paulo |
Company Operations |
Number of industrial units | 3

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