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Identification and Activities of the Company and Subsidiaries (Details Textual) | Dec. 31, 2017 | Dec. 31, 2016
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Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Percentage of shareholder Outstanding shares interest in excess | 5.00% | 5.00%
Number of shareholders | 1,240 |
Pampa Group [Member] |  |
Identification and Activities of the Company and Subsidiaries [Line Items] |  |
Percentage of interest held by other entities | 29.97% | 29.97%

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