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FINANCIAL RISK MANAGEMENT, Liquidity Risk (Details) - ARS ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | $ 4,499,030 | [1] | $ 3,917,000 | [1] | $ 3,335,192
Liquidity Risk [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 4,088,779 |  | 3,485,326 |  |
Other financial liabilities | 1,718,442 |  | 1,093,343 |  |
Finance leases | 1,227,587 |  | 1,186,904 |  |
Liquidity Risk [Member] | Without Specified Maturity [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  |
Other financial liabilities | 0 |  | 0 |  |
Finance leases | 0 |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  |
Other financial liabilities | 75,427 |  | 57,908 |  |
Finance leases | 28,138 |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | Until 12-31-2016 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 74,183 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 01-01-17 to 03-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 04-01-17 to 06-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 07-01-17 to 09-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 10-01-17 to 12-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 28,138 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | Until 12-31-2015 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 56,664 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 01-01-16 to 03-31-16 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 311 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 04-01-16 to 06-30-16 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 311 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 07-01-16 to 09-30-16 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 311 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 10-01-16 to 12-31-16 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 311 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 4,088,779 |  | 3,485,326 |  |
Other financial liabilities | 1,643,015 |  | 1,035,435 |  |
Finance leases | 1,199,449 |  | 1,186,904 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 01-01-18 to 03-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 1,558,120 |  |  |  |
Finance leases | 34,874 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 04-01-18 to 06-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,362,926 |  |  |  |
Other financial liabilities | 84,895 |  |  |  |
Finance leases | 34,874 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 07-01-18 to 09-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 34,874 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 10-01-18 to 12-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 114,632 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 34,874 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 01-01-17 to 03-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 1,092 |  |
Other financial liabilities |  |  | 984,988 |  |
Finance leases |  |  | 75,732 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 04-01-17 to 06-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 146,873 |  |
Other financial liabilities |  |  | 50,447 |  |
Finance leases |  |  | 29,714 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 07-01-17 to 09-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 29,714 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 10-01-17 to 12-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 146,509 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 29,714 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2019 [member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,362,926 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 139,513 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2020 [member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,248,295 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 139,513 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2021 [member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 139,513 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2022 [member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 139,513 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 2023 onwards [member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 501,901 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2018 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 965,945 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 118,873 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2019 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 1,161,290 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 118,873 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2020 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 1,063,617 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 118,873 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 2021 onwards [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 665,410 |  |
Liquidity Risk [Member] | With Specified Maturity [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 4,088,779 |  | 3,485,326 |  |
Other financial liabilities | 1,718,442 |  | 1,093,343 |  |
Finance leases | $ 1,227,587 |  | $ 1,186,904 |  |
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