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EMPLOYEE BENEFITS - Summary (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
EMPLOYEE BENEFITS |  |
Plan assets | R$ 1,149 | R$ 56,797
Total liabilities | 1,424,864 | 1,504,803
Current | 253 | 409
Non-current | 1,424,611 | 1,504,394
Defined contribution pension plan |  |
EMPLOYEE BENEFITS |  |
Plan assets | 1,149 | 1,490
Defined benefit pension plan |  |
EMPLOYEE BENEFITS |  |
Plan assets |  | 55,307
Total liabilities | 1,084,758 | 1,144,080
Post-employment health care benefit |  |
EMPLOYEE BENEFITS |  |
Total liabilities | 316,230 | 305,447
Retirement and termination benefits |  |
EMPLOYEE BENEFITS |  |
Total liabilities | R$ 23,876 | R$ 55,276

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