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21 Loans and Financing (Details 1) - BRL (R$) R$ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 3,142,383 | R$ 4,047,307 | R$ 3,759,505
Loans and financing, percent | 100.00% | 100.00% |
Foreign Currency [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 108,983 | R$ 104,751 |
Loans and financing, percent | 3.47% | 2.59% |
Foreign Currency [Member] | United States of America, Dollars |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 108,983 | R$ 104,751 |
Loans and financing, percent | 3.47% | 2.59% |
Local Currency [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 3,033,400 | R$ 3,942,556 |
Loans and financing, percent | 96.53% | 97.41% |
Local Currency [Member] | CDI |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 676,720 | R$ 1,410,479 |
Loans and financing, percent | 21.54% | 34.85% |
Local Currency [Member] | TJLP |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 2,271,187 | R$ 2,245,786 |
Loans and financing, percent | 72.30% | 55.49% |
Local Currency [Member] | TR |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 2,202 | R$ 4,842 |
Loans and financing, percent | 0.07% | 0.12% |
Local Currency [Member] | IPCA |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 8,288 | R$ 11,992 |
Loans and financing, percent | 0.26% | 0.30% |
Local Currency [Member] | Without indexer (annual fixed rate) |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loans and financing | R$ 75,003 | R$ 269,457 |
Loans and financing, percent | 2.36% | 6.65% |

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- Definition The amount of loans received. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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