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32 Operating Costs and Expenses (Details 2) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | R$ 1,601,895 | R$ 1,325,382 | R$ 1,357,785
Provisions for performance and profit sharing [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 481,681 | 155,544 | 91,526
Personnel [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 1,098,279 | 1,143,978 | 1,238,891
Personnel [member] | Salaries and management fees [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 696,837 | 746,415 | 794,966
Personnel [member] | Social charges on payroll [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 227,485 | 241,025 | 261,459
Personnel [member] | Meal and education allowance [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 107,052 | 113,021 | 113,177
Personnel [member] | Voluntary retirement program [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 66,905 | 43,517 | 69,289
Management [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 21,935 | 25,860 | 27,368
Management [member] | Salaries and management fees [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 18,465 | 19,867 | 21,422
Management [member] | Social charges on payroll [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | 3,233 | 5,745 | 5,695
Management [member] | Other expenses [member] |  |  |
Disclosure of operating costs and expenses [line items] |  |  |
Personnel and management | R$ 237 | R$ 248 | R$ 251

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- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard -URIDate 2020-01-01 + Details
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